{
    "model": {
        "rank": 2169,
        "code": "thing-q81881",
        "model_id": "vr.tr.fork",
        "name": "fork",
        "purpose": "Enable an AI agent to recognise a physical fork, assess whether it is fit for an intended food-handling task, and decide whether to use, clean, repair, isolate or retire it.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q81881/",
        "tier": 2,
        "score": 113,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "snail fork",
                "fish fork",
                "lobster pick",
                "serving fork",
                "pastry fork",
                "sweet fork",
                "fork dessert",
                "carving fork",
                "place fork",
                "toasting fork",
                "Terrapin fork",
                "meat fork",
                "fondue fork",
                "oyster fork",
                "melon fork",
                "chip fork",
                "crab fork",
                "lemon fork",
                "Widelczyk",
                "pickle fork",
                "salad fork"
            ],
            "aliasCount": 21,
            "merged": 22,
            "knownIn": 113,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": "vr.tr.fork",
            "source": {
                "dataset": "wikidata",
                "item": "Q81881",
                "url": "https://www.wikidata.org/wiki/Q81881",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T10:19:43Z",
                "providers": [
                    "Codex",
                    "Grok"
                ],
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "usd": 0.00869516,
                        "turns": 1,
                        "seconds": 142.3,
                        "error": null
                    },
                    "codex": {
                        "seconds": 75.8,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07b5c-f1a7-78a3-8d2f-66c3d0a379d9\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: fork\nRegistry id: vr.tr.fork\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA Vercy model s"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q81881",
                "registryId": "vr.tr.fork",
                "name": "fork",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q81881/",
            "model": {
                "registry_id": "vr.tr.fork",
                "name": "fork",
                "purpose": "Enable an AI agent to recognise a physical fork, assess whether it is fit for an intended food-handling task, and decide whether to use, clean, repair, isolate or retire it.",
                "definition": "A fork is a rigid handheld cutlery implement whose working head is two or more tines used to pierce, hold and lift food, usually as the companion to a knife (and often a spoon) in a Western place setting.",
                "scope_statement": "Provisionally owns a food-handling fork: a hand-held utensil with a handle and separated tines used to pierce, retain, lift or manipulate food, including eating, serving and carving variants; the intended meaning of the undefined registry entry remains to be confirmed.",
                "in_scope": [
                    "Fork identity, intended role and boundaries between eating, serving and carving variants",
                    "Tine geometry, head shape and handle configuration",
                    "Ability to engage, retain and release particular foods",
                    "Material, finish and construction relevant to contact, cleaning and handling",
                    "Cleanliness, tine damage and fitness for an intended use"
                ],
                "out_of_scope": [
                    "Food composition, preparation history and dietary suitability",
                    "Meals, place settings and dining etiquette",
                    "Users' health conditions and general assistance requirements",
                    "Cleaning appliances, detergents and sanitation procedures as independent things",
                    "Agricultural forks, machinery forks, tuning forks and software forks pending registry clarification"
                ],
                "distinguishing_features": [
                    "The working head has separated projecting tines whose gaps permit food engagement; a pointed blade without these gaps is not sufficient.",
                    "The utensil primarily engages food through its tines rather than containing it in a bowl, distinguishing a conventional fork from a spoon.",
                    "Its tines form a common working head operated through one handle, distinguishing it from independently manipulated chopsticks and opposing-jaw tongs.",
                    "A substantial scoop combined with tines requires a hybrid classification decision rather than automatic treatment as a conventional fork.",
                    "Food-handling intent must be evidenced by design, provenance or documented use; a fork-shaped gardening or machine component does not qualify on silhouette alone."
                ],
                "characteristics": [
                    {
                        "name": "Intended food-handling role",
                        "kind": "category",
                        "unit_or_values": "eating | serving | carving support | cooking | other | unknown",
                        "why_it_matters": "Determines which contact conditions, handling demands and food-engagement tasks should be assessed."
                    },
                    {
                        "name": "Tine count",
                        "kind": "measurement",
                        "unit_or_values": "integer count, recording designed and currently present counts separately",
                        "why_it_matters": "Helps identify the fork configuration and detect missing tines."
                    },
                    {
                        "name": "Tine geometry",
                        "kind": "measurement",
                        "unit_or_values": "tine length, width, thickness and clear gap in mm; curvature and alignment where measurable",
                        "why_it_matters": "Affects penetration, food retention, access for cleaning and detection of deformation."
                    },
                    {
                        "name": "Tip profile",
                        "kind": "category",
                        "unit_or_values": "rounded | tapered | pointed | mixed | damaged | unknown",
                        "why_it_matters": "Influences food penetration and suitability for the intended contact with a mouth or hand."
                    },
                    {
                        "name": "Head and handle dimensions",
                        "kind": "measurement",
                        "unit_or_values": "overall length, head width and handle cross-section in mm; mass in g",
                        "why_it_matters": "Supports assessment of reach, grip, portion handling and storage fit."
                    },
                    {
                        "name": "Material and finish by component",
                        "kind": "category",
                        "unit_or_values": "identified material, coating and finish for tines, neck, handle and joints; unknown where unverified",
                        "why_it_matters": "Supports evidence-based decisions about food contact, heat exposure and cleaning."
                    },
                    {
                        "name": "Structural condition",
                        "kind": "state",
                        "unit_or_values": "observed tine alignment, cracks, missing parts, burrs, joint looseness and surface deterioration",
                        "why_it_matters": "Separates cosmetic wear from conditions that could compromise handling or introduce fragments."
                    },
                    {
                        "name": "Cleanliness evidence",
                        "kind": "state",
                        "unit_or_values": "visible residue locations, recorded cleaning, known contact history and unresolved contamination",
                        "why_it_matters": "Prevents a clean appearance from being treated as proof of suitability for food contact."
                    },
                    {
                        "name": "Task compatibility",
                        "kind": "relation",
                        "unit_or_values": "fork linked to a specified food, user, vessel and action, with evidence and limitations",
                        "why_it_matters": "A fork can be suitable for one task and unsuitable for another."
                    }
                ],
                "affordances": [
                    "Select a fork for eating, serving or holding food during cutting using its geometry and condition.",
                    "Pierce, gather, lift, transfer or release food within an evidenced task capability.",
                    "Inspect tine tips, gaps, roots and handle joints for residue, damage or looseness.",
                    "Clean and dry the fork using a method supported for its materials and construction.",
                    "Isolate a fork with unresolved contamination, damaged tines or uncertain food-contact suitability.",
                    "Assess whether repair is supported and verify the result before returning the fork to use."
                ]
            },
            "sources": [
                {
                    "id": "wd-q81881",
                    "title": "table fork (Q81881)",
                    "url": "https://www.wikidata.org/wiki/Q81881",
                    "what_it_supports": "Canonical item for the eating implement, with cross-links to AAT, HS-ish trade classes and sister items for pitchfork, bicycle fork and tuning fork.",
                    "url_status": "live"
                },
                {
                    "id": "wiki-fork",
                    "title": "Fork",
                    "url": "https://en.wikipedia.org/wiki/Fork",
                    "what_it_supports": "History of European adoption, place-setting types (dinner, fish, pastry, oyster), and distinction from agricultural and other named forks.",
                    "url_status": "live"
                },
                {
                    "id": "iso-8442-2",
                    "title": "ISO 8442-2: Materials and articles in contact with foodstuffs - Cutlery and table holloware - Part 2: Requirements for stainless steel and silver-plated cutlery",
                    "url": "https://www.iso.org/standard/21297.html",
                    "what_it_supports": "Performance and food-contact requirements that manufacturers of stainless and silver-plated table forks are actually written to (corrosion, adhesion of plate, strength).",
                    "url_status": "blocked"
                },
                {
                    "id": "eu-1935-2004",
                    "title": "Regulation (EC) No 1935/2004 on materials and articles intended to come into contact with food",
                    "url": "https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32004R1935",
                    "what_it_supports": "EU legal frame for metal (and plastic) forks as food-contact articles: inertness, traceability, and the 'do not transfer constituents in quantities that endanger health' test.",
                    "url_status": "live"
                },
                {
                    "id": "petroski-1992",
                    "title": "The Evolution of Useful Things",
                    "url": "",
                    "what_it_supports": "Henry Petroski (Alfred A. Knopf, 1992) on why the table fork took its four-tine form and how it displaced the knife-as-spear in European dining."
                }
            ],
            "structure": {
                "bundles": [
                    {
                        "id": "fork-identity-and-role",
                        "name": "Fork identity and role",
                        "description": "Establishes whether the object belongs to this fork model and what food-handling role it serves.",
                        "rationale": "Fork-shaped objects and food-utensil hybrids cannot be classified reliably by name or tine count alone.",
                        "layers": [
                            {
                                "id": "working-head-identity",
                                "name": "Working head identity",
                                "description": "Examines the tine arrangement and its relationship to other working surfaces.",
                                "findings": [
                                    {
                                        "id": "tined-food-utensil-boundary",
                                        "name": "Tined food utensil boundary",
                                        "description": "Record the observed head configuration and evidence supporting classification as a food-handling fork.",
                                        "questions": [
                                            {
                                                "text": "Does the object have separated tines operated through a common handle to engage food?",
                                                "kind": "definition",
                                                "id": "tined-food-utensil-boundary-q01"
                                            },
                                            {
                                                "text": "Does a bowl, blade or other working feature make this a hybrid requiring another model?",
                                                "kind": "boundary",
                                                "id": "tined-food-utensil-boundary-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "intended-fork-role",
                                "name": "Intended fork role",
                                "description": "Distinguishes intended use from a role inferred from appearance.",
                                "findings": [
                                    {
                                        "id": "role-evidence",
                                        "name": "Role evidence",
                                        "description": "Record whether eating, serving, carving support or cooking is documented, observed or only inferred.",
                                        "questions": [
                                            {
                                                "text": "What markings, product documentation or use history establish the intended role?",
                                                "kind": "provenance",
                                                "id": "role-evidence-q01"
                                            },
                                            {
                                                "text": "Is the fork intended to enter the mouth, transfer food between vessels or hold food while another tool cuts?",
                                                "kind": "definition",
                                                "id": "role-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "tine-food-engagement",
                        "name": "Tine and food engagement",
                        "description": "Describes how the tine configuration engages, supports and releases food.",
                        "rationale": "A fork's usefulness depends on the interaction between its tines and the particular food, rather than a generic carrying capacity.",
                        "layers": [
                            {
                                "id": "penetration-and-spacing",
                                "name": "Penetration and spacing",
                                "description": "Records the geometry responsible for entering or gathering food.",
                                "findings": [
                                    {
                                        "id": "tine-engagement-profile",
                                        "name": "Tine engagement profile",
                                        "description": "Record tine count, dimensions, clear gaps and tip shape without assuming that one configuration suits every food.",
                                        "questions": [
                                            {
                                                "text": "What are the tine count, usable length, clear gaps and tip profiles?",
                                                "kind": "measurement",
                                                "id": "tine-engagement-profile-q01"
                                            },
                                            {
                                                "text": "Can these tines engage the intended food without unacceptable crushing, slipping or fragmentation?",
                                                "kind": "action",
                                                "id": "tine-engagement-profile-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "retention-and-release",
                                "name": "Retention and release",
                                "description": "Assesses support during lifting and controlled separation from the tines.",
                                "findings": [
                                    {
                                        "id": "food-transfer-behaviour",
                                        "name": "Food transfer behaviour",
                                        "description": "Record observed retention and release for a specified food, portion and movement.",
                                        "questions": [
                                            {
                                                "text": "For the intended portion and lifting orientation, does food stay engaged or fall through or off the tines?",
                                                "kind": "measurement",
                                                "id": "food-transfer-behaviour-q01"
                                            },
                                            {
                                                "text": "Can the food be released at the destination without excessive force or an unintended scraping action?",
                                                "kind": "action",
                                                "id": "food-transfer-behaviour-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "grip-reach-and-contact",
                        "name": "Grip, reach and contact",
                        "description": "Connects handle and head geometry to the user, mouth, vessel and nearby tools.",
                        "rationale": "A fork must place its tines accurately while keeping the user's grip and other contact surfaces appropriate to the task.",
                        "layers": [
                            {
                                "id": "handle-control",
                                "name": "Handle control",
                                "description": "Assesses orientation, grip security and usable reach.",
                                "findings": [
                                    {
                                        "id": "controlled-tine-positioning",
                                        "name": "Controlled tine positioning",
                                        "description": "Record whether the intended user can orient and control the working head under the expected handling conditions.",
                                        "questions": [
                                            {
                                                "text": "What handle dimensions, head offset and overall length determine grip and reach?",
                                                "kind": "measurement",
                                                "id": "controlled-tine-positioning-q01"
                                            },
                                            {
                                                "text": "Can the intended user maintain tine orientation with the expected wetness, food resistance and movement?",
                                                "kind": "action",
                                                "id": "controlled-tine-positioning-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "mouth-vessel-and-tool-fit",
                                "name": "Mouth, vessel and tool fit",
                                "description": "Examines the contact boundaries of the intended operation.",
                                "findings": [
                                    {
                                        "id": "task-contact-clearance",
                                        "name": "Task contact clearance",
                                        "description": "Record relevant clearances and contact constraints for eating, reaching into vessels or holding food beside a cutting tool.",
                                        "questions": [
                                            {
                                                "text": "Does head width, tine length or tip condition restrict the intended mouth or vessel contact?",
                                                "kind": "boundary",
                                                "id": "task-contact-clearance-q01"
                                            },
                                            {
                                                "text": "Can the task be performed with adequate clearance from the vessel rim, gripping hand and any cutting tool?",
                                                "kind": "action",
                                                "id": "task-contact-clearance-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "food-contact-and-cleaning",
                        "name": "Food contact and cleaning",
                        "description": "Records material evidence and the cleanliness of the fork's food-contact surfaces and crevices.",
                        "rationale": "Tine gaps, tine roots and mixed-material joints create inspection and cleaning concerns specific to fork construction.",
                        "layers": [
                            {
                                "id": "contact-material-evidence",
                                "name": "Contact material evidence",
                                "description": "Identifies exposed materials and supported conditions of use.",
                                "findings": [
                                    {
                                        "id": "material-use-limits",
                                        "name": "Material use limits",
                                        "description": "Record materials, coatings and documented restrictions without inferring food-contact suitability from appearance.",
                                        "questions": [
                                            {
                                                "text": "What evidence identifies the exposed tine materials, coatings and any handle material that may contact food?",
                                                "kind": "provenance",
                                                "id": "material-use-limits-q01"
                                            },
                                            {
                                                "text": "What documented limits apply to food contact, temperature and cleaning for this fork?",
                                                "kind": "boundary",
                                                "id": "material-use-limits-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "tine-gap-and-joint-cleanliness",
                                "name": "Tine gap and joint cleanliness",
                                "description": "Locates residue and uncertainty at difficult-to-inspect features.",
                                "findings": [
                                    {
                                        "id": "cleaning-readiness",
                                        "name": "Cleaning readiness",
                                        "description": "Record visible residue, relevant contact history and whether the supported cleaning method can reach affected surfaces.",
                                        "questions": [
                                            {
                                                "text": "Is residue present between tines, at tine roots, beneath decorative relief or around handle joints?",
                                                "kind": "measurement",
                                                "id": "cleaning-readiness-q01"
                                            },
                                            {
                                                "text": "What supported cleaning action addresses the observed residue and known prior contact before the next use?",
                                                "kind": "action",
                                                "id": "cleaning-readiness-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "tine-integrity-and-disposition",
                        "name": "Tine integrity and disposition",
                        "description": "Connects damage to food handling and decisions about continued use.",
                        "rationale": "Bent, fractured or burred tines can change engagement and contact behaviour even when the fork remains recognisable.",
                        "layers": [
                            {
                                "id": "damage-and-deformation",
                                "name": "Damage and deformation",
                                "description": "Distinguishes intended geometry from wear, distortion and breakage.",
                                "findings": [
                                    {
                                        "id": "working-head-integrity",
                                        "name": "Working head integrity",
                                        "description": "Record missing or misaligned tines, cracks, rough tips and neck or handle-joint instability.",
                                        "questions": [
                                            {
                                                "text": "Which tines or joints show bending, cracking, missing material, burrs or movement relative to the intended configuration?",
                                                "kind": "measurement",
                                                "id": "working-head-integrity-q01"
                                            },
                                            {
                                                "text": "What reference or history distinguishes intentional asymmetry from damage?",
                                                "kind": "provenance",
                                                "id": "working-head-integrity-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "continued-use-decision",
                                "name": "Continued use decision",
                                "description": "Turns observed condition and unresolved evidence into a task-specific disposition.",
                                "findings": [
                                    {
                                        "id": "use-repair-or-retire",
                                        "name": "Use, repair or retire",
                                        "description": "Record the permitted next action and the evidence required before a damaged or uncertain fork returns to food handling.",
                                        "questions": [
                                            {
                                                "text": "Do the observed tip, tine, surface and joint conditions support the intended next use, or require isolation?",
                                                "kind": "action",
                                                "id": "use-repair-or-retire-q01"
                                            },
                                            {
                                                "text": "If repair is proposed, what evidence supports the method and what inspection must establish fitness before reuse?",
                                                "kind": "action",
                                                "id": "use-repair-or-retire-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "evidence-and-external-alignment",
                        "name": "Evidence and external alignment",
                        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
                        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
                        "layers": [
                            {
                                "id": "reported-evidence",
                                "name": "Reported evidence",
                                "description": "Findings from the breadth pass, kept separate from the structural claims.",
                                "findings": [
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "dinner / place fork (four tines, full size)",
                                            "salad fork (shorter than the dinner fork; in some services also used as a fish or luncheon fork)",
                                            "fish fork (typically broader tines; often a notch on the leftmost tine)",
                                            "dessert / pastry fork (smaller; often three tines with the left tine widened to cut pastry)",
                                            "cocktail, oyster or seafood fork (short, two or three tines)",
                                            "serving or cold-meat fork (larger head, used from a platter)",
                                            "carving fork (two long tines; holds a joint while a carving knife cuts)",
                                            "disposable utility fork (stamped plastic or light stainless, single-use or picnic)"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of fork this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-identifiers",
                                        "name": "Identifiers and schemes",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "scheme": "Wikidata",
                                                "value_or_pattern": "Q81881",
                                                "note": "table fork / eating fork; not the disambiguation page. Pitchfork is Q209225, bicycle fork Q1368878, tuning fork Q20403."
                                            },
                                            {
                                                "scheme": "Getty AAT",
                                                "value_or_pattern": "300043226",
                                                "note": "forks (flatware). Agricultural forks are a separate AAT class."
                                            },
                                            {
                                                "scheme": "UNSPSC",
                                                "value_or_pattern": "52151504",
                                                "note": "commodity code for table forks under tableware."
                                            },
                                            {
                                                "scheme": "HS / Harmonized System",
                                                "value_or_pattern": "8215.*",
                                                "note": "Heading 8215 covers spoons, forks, ladles and similar kitchen or tableware; precious-metal plated ware is 8215.91, other (including stainless) 8215.99."
                                            },
                                            {
                                                "scheme": "GTIN / UPC / EAN",
                                                "value_or_pattern": "per SKU",
                                                "note": "Identifies a manufactured pattern and finish, not the kind."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of fork this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-standards-and-regulation",
                                        "name": "Standards and regulation",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "ISO 8442-2 (International Organization for Standardization) - stainless-steel and silver-plated table cutlery: corrosion, plate adhesion, strength.",
                                            "ISO 8442-1 (ISO) - cutlery for food preparation (carving and cook's forks sit here more than place forks).",
                                            "Regulation (EC) No 1935/2004 (European Union) - food-contact materials, including metal and plastic forks.",
                                            "Commission Regulation (EU) No 10/2011 (European Union) - plastic food-contact articles; the usual legal test for disposable polymer forks.",
                                            "FDA food-contact provisions, 21 CFR parts 175-189 and the Food Code (United States) - utensils in food service.",
                                            "NSF/ANSI 2 (NSF International / ANSI) - food equipment; cited for commercial-grade flatware in food-service procurement.",
                                            "REACH, Regulation (EC) No 1907/2006 (European Union) - nickel and other metal restrictions relevant to stainless and plated handles.",
                                            "California Proposition 65 (State of California) - warnings where lead or cadmium is present in decorative finishes or antique plate."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of fork this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Laid to the left of the plate in a standard Western place setting; additional forks are stacked outward in the order they will be used.",
                                            "Used to spear and lift bites, and to pin food while a knife cuts (continental style keeps the fork in the left hand; American 'zigzag' switches it to the right).",
                                            "Carving forks hold a roast on a board; serving forks lift slices from a platter.",
                                            "Stamped stainless or disposable plastic forks are the default in canteens, airlines, hospitals, takeaway and camping kits.",
                                            "Specialist small forks (oyster, snail, pickle, fondue) appear only in the matching service, not in everyday place settings."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of fork this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "quantity": "overall length (dinner fork)",
                                                "typical_range": "175-210",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "overall length (salad or dessert fork)",
                                                "typical_range": "150-180",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "overall length (cocktail or oyster fork)",
                                                "typical_range": "110-145",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "mass (stainless dinner fork)",
                                                "typical_range": "35-90",
                                                "unit": "g"
                                            },
                                            {
                                                "quantity": "mass (disposable plastic fork)",
                                                "typical_range": "2-6",
                                                "unit": "g"
                                            },
                                            {
                                                "quantity": "tine count",
                                                "typical_range": "2-4",
                                                "unit": "count"
                                            },
                                            {
                                                "quantity": "tine length",
                                                "typical_range": "30-65",
                                                "unit": "mm"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of fork this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Tines bend or splay, then fail to hold food; common in thin stampings and in polymer forks under heat.",
                                            "A tine snaps and a fragment is swallowed (choking or internal injury); the usual failure of brittle plastic at the neck.",
                                            "Pitting and crevice corrosion of low-grade stainless (especially 18/0) in chloride dishwashers; silver plate wears through to a copper or nickel interlayer.",
                                            "Nickel-contact dermatitis from 18/8-18/10 stainless or from worn plating.",
                                            "Lead or cadmium in antique or decorative painted/enameled handles; food-contact leaching if the coating is damaged.",
                                            "Puncture wounds from rigid tines, including plastic forks used as improvised tools.",
                                            "Loosening of riveted wooden or resin handles, which then harbour moisture and soil."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of fork this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Dining style, not the object, is the main split: continental (fork stays in the left hand) versus American switching; both use the same four-tine dinner fork.",
                                            "England adopted the table fork late (seventeenth-eighteenth century) relative to Italy and France; multiple specialised forks in service à la russe are a European hotel/restaurant practice more than a North American home one.",
                                            "In East Asia the everyday analogue is chopsticks; the fork appears mainly in Western-style restaurants and as an import.",
                                            "'Garden fork' (UK) / 'spading fork' (US) and 'pitchfork' are agricultural tools, not tableware; they share the English name but not the place-setting object.",
                                            "Local names (French fourchette, Italian forchetta, German Gabel, Spanish tenedor) all denote the eating implement in ordinary speech; Gabel also names a road fork, which the object does not."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of fork this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "name": "pitchfork / hay fork",
                                                "difference": "Long shaft, two or three widely spaced tines, used to lift loose fodder or debris; not brought to the mouth and not part of a place setting."
                                            },
                                            {
                                                "name": "garden / digging / spading fork",
                                                "difference": "Short D-handle or long shaft, thick square tines for breaking soil; a cultivation tool, tested by use in earth rather than at table."
                                            },
                                            {
                                                "name": "spork",
                                                "difference": "A spoon bowl with short tines cut into the lip; it scoops liquids, which a fork cannot."
                                            },
                                            {
                                                "name": "chopsticks",
                                                "difference": "A pair of sticks with no tines; food is pinched, not pierced. The functional substitute in much of East Asia."
                                            },
                                            {
                                                "name": "table knife",
                                                "difference": "A cutting edge rather than tines; often paired with the fork, never a substitute for piercing and lifting bite-sized pieces."
                                            },
                                            {
                                                "name": "tuning fork",
                                                "difference": "A U-shaped acoustic resonator struck to sound a pitch; tines are not for food and there is no dining handle."
                                            },
                                            {
                                                "name": "bicycle fork",
                                                "difference": "The steerer-and-blades assembly that holds the front wheel; a vehicle structural part, identified by axle and steerer standards, not by tine count."
                                            },
                                            {
                                                "name": "trident / fish spear",
                                                "difference": "A thrusting weapon or fishing spear with barbed prongs; length and use (thrown or thrust, not lifted to the mouth) separate it from cutlery."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of fork this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does vr.tr.fork mean a food utensil specifically, or a broader family that includes agricultural, mechanical or acoustic forks?",
                "Does an existing Vercy world model already own this concept and therefore require a registry link instead of a separate publication?",
                "Which eating, serving, carving and cooking variants belong within this entry, and where should hybrids such as sporks be modelled?",
                "Which authoritative sources establish material-specific food-contact, heat and cleaning limits for the fork variants in scope?",
                "What evidence or acceptance criteria should govern damaged-tine rejection, repair and task-specific suitability without inventing universal thresholds?"
            ],
            "statistics": {
                "bundles": 6,
                "layers": 11,
                "findings": 18,
                "questions": 28
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "device, machine or tool",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a fork, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise a physical fork, assess whether it is fit for an intended food-handling task, and decide whether to use, clean, repair, isolate or retire it.",
            "characteristics": {
                "substance": "material",
                "origin": "manufactured",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: snail fork, fish fork, lobster pick, serving fork, pastry fork, sweet fork, fork dessert, carving fork, place fork, toasting fork, Terrapin fork, meat fork.",
                "22 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 113 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is."
            ],
            "openQuestionsForResearch": [
                "Which of the bundles below does a real task actually need, and which are ceremony?",
                "What does this thing have that the facets do not capture at all?",
                "Which neighbouring kind is most often confused with a fork, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "matter you can touch",
            "physicalCharacter": [
                "Mobility varies between examples.",
                "Does nothing on its own; everything it does, something else did to it.",
                "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing."
            ],
            "whatCanBeDoneWithIt": [
                "observe it, measure it, record its state"
            ],
            "howItIsRecognised": [
                "Recognised by form, by the arrangement of its controls, and by markings - a plate, a model number, a certification mark. Form alone rarely separates two models that do very different things."
            ],
            "relatedModels": [
                {
                    "relation": "covers",
                    "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.",
                    "targets": [
                        "snail fork",
                        "fish fork",
                        "lobster pick",
                        "serving fork",
                        "pastry fork",
                        "sweet fork",
                        "fork dessert",
                        "carving fork",
                        "place fork",
                        "toasting fork",
                        "Terrapin fork",
                        "meat fork"
                    ]
                }
            ],
            "standing": "Described in 113 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 22 finer distinctions are held inside this entry as names rather than as separate models.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one fork from another, and a fork from things that resemble it.",
                        "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.",
                        "layers": [
                            {
                                "id": "naming-and-identifiers",
                                "name": "Names and identifiers",
                                "description": "The names this thing goes by and the identifiers that survive translation and time.",
                                "findings": [
                                    {
                                        "id": "preferred-name-and-aliases",
                                        "name": "Preferred name, aliases and local names",
                                        "description": "Which name to use, which names mean the same thing, and which merely sound similar.",
                                        "questions": [
                                            {
                                                "id": "preferred-name-and-aliases-q01",
                                                "text": "What identifies and describes the name of a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q02",
                                                "text": "Who or what asserted this about the name of a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q03",
                                                "text": "What may an agent decide or do once the name of a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "stable-identifiers",
                                        "name": "Stable identifiers and external keys",
                                        "description": "Identifiers that keep pointing at this kind of thing across systems and languages.",
                                        "questions": [
                                            {
                                                "id": "stable-identifiers-q01",
                                                "text": "What identifies and describes an identifier for a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q02",
                                                "text": "Who or what asserted this about an identifier for a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q03",
                                                "text": "What may an agent decide or do once an identifier for a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "classification-and-granularity",
                                "name": "Classification and granularity",
                                "description": "Where a fork sits among kinds, and how finely a task needs to cut it.",
                                "findings": [
                                    {
                                        "id": "kind-and-parents",
                                        "name": "Kind, parents and neighbouring kinds",
                                        "description": "The classes this thing belongs to and the ones it is next to.",
                                        "questions": [
                                            {
                                                "id": "kind-and-parents-q01",
                                                "text": "What identifies and describes the kind of a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q02",
                                                "text": "Who or what asserted this about the kind of a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q03",
                                                "text": "What may an agent decide or do once the kind of a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "distinguishing-features",
                                        "name": "Distinguishing features",
                                        "description": "What separates a fork from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q02",
                                                "text": "Who or what asserted this about what distinguishes a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q03",
                                                "text": "What may an agent decide or do once what distinguishes a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "form-and-composition",
                        "name": "Form, composition and condition",
                        "description": "What a fork is made of, what shape and size it takes, and what state it is in.",
                        "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.",
                        "layers": [
                            {
                                "id": "form-and-dimensions",
                                "name": "Form and dimensions",
                                "description": "Shape, size, mass and the ranges these take across examples.",
                                "findings": [
                                    {
                                        "id": "measurable-dimensions",
                                        "name": "Measurable dimensions and their units",
                                        "description": "The quantities worth recording and the units they are recorded in.",
                                        "questions": [
                                            {
                                                "id": "measurable-dimensions-q01",
                                                "text": "What identifies and describes the dimensions of a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q02",
                                                "text": "Who or what asserted this about the dimensions of a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q03",
                                                "text": "What may an agent decide or do once the dimensions of a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "material-and-composition",
                                "name": "Material and composition",
                                "description": "Materials, parts and how they are put together.",
                                "findings": [
                                    {
                                        "id": "parts-and-materials",
                                        "name": "Parts and materials",
                                        "description": "What a fork is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q02",
                                                "text": "Who or what asserted this about the composition of a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q03",
                                                "text": "What may an agent decide or do once the composition of a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-integrity",
                                "name": "Condition and integrity",
                                "description": "Wear, damage, health and the difference between working and broken.",
                                "findings": [
                                    {
                                        "id": "condition-assessment",
                                        "name": "Condition, damage and health",
                                        "description": "How the condition of a fork is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q02",
                                                "text": "Who or what asserted this about the condition of a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q03",
                                                "text": "What may an agent decide or do once the condition of a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "place-and-movement",
                        "name": "Place and movement",
                        "description": "Where a fork is, how it got there and where it may go (varies).",
                        "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.",
                        "layers": [
                            {
                                "id": "location-and-placement",
                                "name": "Location and placement",
                                "description": "Position, containment and the reference frame the position is given in.",
                                "findings": [
                                    {
                                        "id": "position-and-frame",
                                        "name": "Position, container and reference frame",
                                        "description": "Where a fork is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q02",
                                                "text": "Who or what asserted this about the location of a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q03",
                                                "text": "What may an agent decide or do once the location of a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "movement-and-transfer",
                                "name": "Movement and transfer",
                                "description": "How a fork is carried, installed or relocated.",
                                "findings": [
                                    {
                                        "id": "movement-events",
                                        "name": "Movement events and constraints",
                                        "description": "What counts as a movement, what records it and what limits it.",
                                        "questions": [
                                            {
                                                "id": "movement-events-q01",
                                                "text": "What identifies and describes the movement of a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q02",
                                                "text": "Who or what asserted this about the movement of a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q03",
                                                "text": "What may an agent decide or do once the movement of a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "state-and-lifecycle",
                        "name": "State and lifecycle",
                        "description": "The states a fork passes through and the events that move it between them.",
                        "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.",
                        "layers": [
                            {
                                "id": "lifecycle-stages",
                                "name": "Lifecycle stages",
                                "description": "From coming into existence to ceasing to be one of these.",
                                "findings": [
                                    {
                                        "id": "stages-and-transitions",
                                        "name": "Stages and transitions",
                                        "description": "The stages worth naming and what moves a fork between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q02",
                                                "text": "Who or what asserted this about the lifecycle of a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q03",
                                                "text": "What may an agent decide or do once the lifecycle of a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "observations-and-status",
                                "name": "Observations and current status",
                                "description": "What is observed about a fork, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a fork is recorded so that it can be superseded rather than overwritten.",
                                        "questions": [
                                            {
                                                "id": "observation-record-q01",
                                                "text": "What identifies and describes an observation of a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q02",
                                                "text": "Who or what asserted this about an observation of a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q03",
                                                "text": "What may an agent decide or do once an observation of a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "function-and-principle",
                        "name": "Function and operating principle",
                        "description": "What fork is for and how it achieves it.",
                        "rationale": "Two devices with the same name can work on different principles, and the principle is what predicts failure and constrains use.",
                        "layers": [
                            {
                                "id": "intended-function",
                                "name": "Intended function",
                                "description": "The job it does, and the jobs it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-record",
                                        "name": "Function, principle and variants",
                                        "description": "What it does, how, and which variants do it differently.",
                                        "questions": [
                                            {
                                                "id": "function-record-q01",
                                                "text": "What function does fork perform, on what operating principle, and which variants differ in that principle?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "function-record-q02",
                                                "text": "What use falls outside the intended function but happens in practice?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "capacity-and-rating",
                                "name": "Capacity and rating",
                                "description": "The numbers that say what it can do and where it stops.",
                                "findings": [
                                    {
                                        "id": "ratings",
                                        "name": "Ratings and their conditions",
                                        "description": "Rated capacity, power, throughput and the conditions each assumes.",
                                        "questions": [
                                            {
                                                "id": "ratings-q01",
                                                "text": "What ratings characterise fork, in what units, and under what stated conditions?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "ratings-q02",
                                                "text": "What happens beyond the rating - degradation, refusal, damage - and how is that detected?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "operation-and-state",
                        "name": "Operation, controls and state",
                        "description": "How fork is operated and what state it is in right now.",
                        "rationale": "An agent acting on a device needs its current state and the controls that change it, not just its specification.",
                        "layers": [
                            {
                                "id": "controls-and-modes",
                                "name": "Controls and modes",
                                "description": "What can be set, what that changes, and what is interlocked.",
                                "findings": [
                                    {
                                        "id": "control-surface",
                                        "name": "Control surface and interlocks",
                                        "description": "The settings available and the conditions that block them.",
                                        "questions": [
                                            {
                                                "id": "control-surface-q01",
                                                "text": "What controls and modes does fork have, and what does each change?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "control-surface-q02",
                                                "text": "Which actions are interlocked or forbidden in which state, and what must be true before acting?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-maintenance",
                                "name": "Condition and maintenance",
                                "description": "Wear, service intervals, consumables and the line between working and broken.",
                                "findings": [
                                    {
                                        "id": "service-record",
                                        "name": "Condition, service and consumables",
                                        "description": "What is consumed, what is serviced, and how condition is judged.",
                                        "questions": [
                                            {
                                                "id": "service-record-q01",
                                                "text": "What consumables and service does fork need, at what interval, and on whose authority?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "service-record-q02",
                                                "text": "What evidence separates a unit that is working from one that is out of service?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "kind-model-unit",
                        "name": "Kind, model and unit",
                        "description": "Whether a claim about fork is about the kind, a product line, or one physical unit.",
                        "rationale": "This is the boundary most often got wrong for made things, and getting it wrong mixes a catalogue entry with the machine in the yard.",
                        "layers": [
                            {
                                "id": "level-of-reference",
                                "name": "Level of reference",
                                "description": "The three levels and what belongs at each.",
                                "findings": [
                                    {
                                        "id": "level-rules",
                                        "name": "What belongs to kind, model and unit",
                                        "description": "Which properties are shared by all of them and which are not.",
                                        "questions": [
                                            {
                                                "id": "level-rules-q01",
                                                "text": "Which facts about fork hold for every one of them, which for a model, and which only for one unit?",
                                                "kind": "boundary"
                                            },
                                            {
                                                "id": "level-rules-q02",
                                                "text": "What identifies an individual unit, and what should an agent do when it has only the kind?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "standards-and-conformity",
                                "name": "Standards and conformity",
                                "description": "The standards a working example must meet and who attests it.",
                                "findings": [
                                    {
                                        "id": "conformity",
                                        "name": "Standards, marks and attestation",
                                        "description": "Which standard applies, who certifies, and what the mark means.",
                                        "questions": [
                                            {
                                                "id": "conformity-q01",
                                                "text": "Which standards govern fork, issued by whom, and what does conformity actually assert?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "conformity-q02",
                                                "text": "What may an agent conclude from a certification mark, and what may it not?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a fork came from and when it held.",
                        "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.",
                        "layers": [
                            {
                                "id": "source-and-authority",
                                "name": "Source and authority",
                                "description": "Who said it, on what evidence, and how strongly.",
                                "findings": [
                                    {
                                        "id": "claim-provenance",
                                        "name": "Claim provenance and confidence",
                                        "description": "The authority behind each claim about a fork and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q02",
                                                "text": "Who or what asserted this about a claim about a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q03",
                                                "text": "What may an agent decide or do once a claim about a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "time-and-versions",
                                "name": "Time, versions and supersession",
                                "description": "When a claim was true, when it was learnt, and what replaced it.",
                                "findings": [
                                    {
                                        "id": "validity-and-supersession",
                                        "name": "Validity period and supersession",
                                        "description": "How an old claim about a fork is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a fork, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q02",
                                                "text": "Who or what asserted this about the validity of a claim about a fork, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q03",
                                                "text": "What may an agent decide or do once the validity of a claim about a fork is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 8,
                "layers": 17,
                "findings": 19,
                "questions": 51
            }
        }
    }
}