{
    "model": {
        "rank": 2237,
        "code": "thing-q23834",
        "model_id": "vr.tr.comb",
        "name": "comb",
        "purpose": "Enable an AI agent to recognise a comb, assess whether its teeth and body are suitable for a particular task, and decide how it may be used, cleaned, stored or retired.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q23834/",
        "tier": 2,
        "score": 111,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "hand carder",
                "hot comb",
                "combs in Basque mythology",
                "Beinkamm",
                "comb mane",
                "composite comb",
                "Oroku-gushi",
                "tail comb",
                "heru",
                "horn comb",
                "ivory comb",
                "liturgical comb",
                "hackle",
                "peineta",
                "hair pick",
                "Chambit",
                "Kangha",
                "beard comb"
            ],
            "aliasCount": 18,
            "merged": 18,
            "knownIn": 111,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": "vr.tr.comb-artifact",
            "source": {
                "dataset": "wikidata",
                "item": "Q23834",
                "url": "https://www.wikidata.org/wiki/Q23834",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T11:00:12Z",
                "providers": [
                    "Codex",
                    "Grok"
                ],
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "usd": 0.00784346,
                        "turns": 1,
                        "seconds": 132.2,
                        "error": null
                    },
                    "codex": {
                        "seconds": 145.4,
                        "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: 01a07b7e-28bb-78e0-8adc-aef7923585f4\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: comb\nRegistry id: vr.tr.comb\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA Vercy model s"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q23834",
                "registryId": "vr.tr.comb",
                "name": "comb",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q23834/",
            "model": {
                "registry_id": "vr.tr.comb",
                "name": "comb",
                "purpose": "Enable an AI agent to recognise a comb, assess whether its teeth and body are suitable for a particular task, and decide how it may be used, cleaned, stored or retired.",
                "definition": "A comb is a rigid implement whose regularly spaced teeth project from a spine (back), used to separate, align, clean, hold or ornament hair, textile fibres or animal coats, with tooth pitch and stiffness determining the job.",
                "scope_statement": "This model owns an individual physical comb whose supported teeth pass through, separate, arrange or retain hair, fur or comparable strands, including its working geometry, condition and task compatibility; ambiguous uses of the name remain boundary questions.",
                "in_scope": [
                    "Tooth arrangement, spacing, length, profile and tip condition",
                    "Spine, handle, grip and any integrated parting feature",
                    "Material, rigidity and response to the intended working environment",
                    "Compatibility with the intended strands, wearer and grooming task",
                    "Residue, cleaning history, damage and readiness for reuse"
                ],
                "out_of_scope": [
                    "The biological condition and treatment of hair, scalp, skin or fur",
                    "Brushes whose working surface consists of a field of bristles",
                    "Clippers, razors and other tools whose primary action is cutting",
                    "Formulations and effects of shampoos, conditioners or styling products",
                    "Grooming procedures and service management beyond this comb's participation",
                    "Unrelated toothed components called combs in machinery or other domains"
                ],
                "distinguishing_features": [
                    "Check for individually identifiable teeth projecting from a supporting body, with gaps through which strands can pass; this distinguishes a comb from a continuous smoothing blade.",
                    "Check whether the working elements form a defined tooth row or rows rather than a brush-like field of bristles; hybrid tools require component-level identification.",
                    "Check whether the intended action is strand separation, arrangement or retention rather than severing; toothed cutting tools need a neighbouring model.",
                    "Check whether a toothed hair accessory actually engages strands through its gaps; a pin or clip without this structure is not established as a comb.",
                    "Check intended use as well as silhouette before classifying a rake, fork or machine component with similar projecting teeth."
                ],
                "characteristics": [
                    {
                        "name": "Comb role",
                        "kind": "category",
                        "unit_or_values": "detangling | arranging | parting | retaining | fine-particle removal | other | unknown; multiple allowed",
                        "why_it_matters": "The intended role determines which geometry and condition checks are relevant."
                    },
                    {
                        "name": "Clear gap between adjacent teeth",
                        "kind": "measurement",
                        "unit_or_values": "mm, recorded by tooth zone with minimum and maximum where variable",
                        "why_it_matters": "Gap size constrains which strands, tangles or particles can pass between teeth."
                    },
                    {
                        "name": "Tooth length",
                        "kind": "measurement",
                        "unit_or_values": "mm from supporting body to tip, by zone",
                        "why_it_matters": "Length affects working reach through a section of strands."
                    },
                    {
                        "name": "Tooth profile",
                        "kind": "category",
                        "unit_or_values": "cross-section, taper, curvature and tip shape described by zone",
                        "why_it_matters": "Profile helps assess strand engagement and potential snagging or uncomfortable contact."
                    },
                    {
                        "name": "Tooth arrangement",
                        "kind": "category",
                        "unit_or_values": "row count, orientation and uniform or mixed spacing zones",
                        "why_it_matters": "Different zones may support different passes or tasks on the same comb."
                    },
                    {
                        "name": "Material by working component",
                        "kind": "category",
                        "unit_or_values": "identified material and coating for teeth, spine and handle; unknown permitted",
                        "why_it_matters": "Material identity informs cleaning and environmental compatibility checks."
                    },
                    {
                        "name": "Flex under a specified load",
                        "kind": "measurement",
                        "unit_or_values": "mm deflection at stated force in N, location and test conditions",
                        "why_it_matters": "Flex affects control and whether the teeth yield during resistance."
                    },
                    {
                        "name": "Working-edge integrity",
                        "kind": "state",
                        "unit_or_values": "intact | rough | chipped | cracked | bent | missing teeth | uncertain; location recorded",
                        "why_it_matters": "Local defects can make an otherwise recognisable comb unsuitable for contact."
                    },
                    {
                        "name": "Retained material",
                        "kind": "state",
                        "unit_or_values": "none observed | trapped strands | product residue | visible soil | suspected contamination | unknown",
                        "why_it_matters": "Material between teeth or at their roots changes readiness for use and cleaning needs."
                    },
                    {
                        "name": "Intended-use compatibility",
                        "kind": "relation",
                        "unit_or_values": "comb or tooth zone linked to target strands, user or animal, task and supporting evidence",
                        "why_it_matters": "Suitability belongs to a particular use context rather than to the comb in isolation."
                    },
                    {
                        "name": "Cleaning compatibility",
                        "kind": "relation",
                        "unit_or_values": "comb linked to documented methods, agents, temperatures and restrictions; unknown permitted",
                        "why_it_matters": "A proposed cleaning method must be compatible with the comb's materials and construction."
                    }
                ],
                "affordances": [
                    "Select a tooth zone and pass it through a suitable section of strands to separate or arrange them.",
                    "Use an integrated parting tip to divide strands when that feature is present and suitable.",
                    "Insert a retaining comb into an arrangement of hair when its design supports that role.",
                    "Inspect tooth tips, gaps and roots for damage, snag points and retained material.",
                    "Remove trapped strands and clean the comb using a supported method.",
                    "Withdraw a damaged or insufficiently cleaned comb from use and store a ready comb with its teeth protected."
                ]
            },
            "sources": [
                {
                    "id": "wikipedia-comb",
                    "title": "Comb - Wikipedia, Wikimedia Foundation",
                    "url": "https://en.wikipedia.org/wiki/Comb",
                    "what_it_supports": "Object definition, common hair-comb types, materials, and distinction from brushes and picks.",
                    "url_status": "live"
                },
                {
                    "id": "wco-hs-9615",
                    "title": "Harmonized System heading 9615 (Combs, hair-slides and the like) - World Customs Organization",
                    "url": "",
                    "what_it_supports": "International trade classification that treats combs as a named commodity distinct from brushes and from electrical hair appliances."
                },
                {
                    "id": "britannica-comb",
                    "title": "Comb - Encyclopaedia Britannica",
                    "url": "",
                    "what_it_supports": "Historical materials (wood, bone, horn, ivory, metal, plastics) and use as both grooming tool and dress ornament."
                },
                {
                    "id": "sgpc-rehat-maryada",
                    "title": "Sikh Rehat Maryada - Shiromani Gurdwara Parbandhak Committee",
                    "url": "",
                    "what_it_supports": "The kangha as an obligatory wooden comb among the five Ks of initiated Sikhs, a regional and religious use of the same object class."
                }
            ],
            "structure": {
                "bundles": [
                    {
                        "id": "comb-identity-and-role",
                        "name": "Comb identity and role",
                        "description": "Establish whether the object is a comb and which strand-handling roles its features support.",
                        "rationale": "A toothed silhouette alone does not distinguish a grooming comb from neighbouring tools or establish its intended action.",
                        "layers": [
                            {
                                "id": "toothed-working-structure",
                                "name": "Toothed working structure",
                                "description": "Identify the supported teeth and the path available for strands between them.",
                                "findings": [
                                    {
                                        "id": "comb-structure-test",
                                        "name": "Comb structure test",
                                        "description": "Record the observed tooth structure and intended strand interaction as the basis for classification.",
                                        "questions": [
                                            {
                                                "text": "Which projecting elements are teeth, what supports them, and where can strands pass between them?",
                                                "kind": "definition",
                                                "id": "comb-structure-test-q01"
                                            },
                                            {
                                                "text": "What distinguishes this object from a brush, cutting tool or unrelated toothed component?",
                                                "kind": "boundary",
                                                "id": "comb-structure-test-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "supported-comb-roles",
                                "name": "Supported comb roles",
                                "description": "Separate observed capabilities from named or advertised comb types.",
                                "findings": [
                                    {
                                        "id": "role-evidence",
                                        "name": "Role evidence",
                                        "description": "Record whether the comb is intended for moving through strands, remaining in them or performing a specialised separation task.",
                                        "questions": [
                                            {
                                                "text": "Which roles are supported by the tooth arrangement and body design?",
                                                "kind": "definition",
                                                "id": "role-evidence-q01"
                                            },
                                            {
                                                "text": "What marking, instruction or observed use supports each assigned role?",
                                                "kind": "provenance",
                                                "id": "role-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "tooth-geometry-and-engagement",
                        "name": "Tooth geometry and engagement",
                        "description": "Describe the working gaps, reach and contact surfaces that govern engagement with strands.",
                        "rationale": "Comb selection depends on the actual teeth and gaps, including differences within a single comb.",
                        "layers": [
                            {
                                "id": "spacing-and-reach",
                                "name": "Spacing and reach",
                                "description": "Record tooth zones and their dimensions without reducing mixed geometry to one label.",
                                "findings": [
                                    {
                                        "id": "tooth-zone-dimensions",
                                        "name": "Tooth zone dimensions",
                                        "description": "Locate zones with different gaps, lengths or orientations and preserve their measurements separately.",
                                        "questions": [
                                            {
                                                "text": "What are the clear gaps and tooth lengths in each working zone?",
                                                "kind": "measurement",
                                                "id": "tooth-zone-dimensions-q01"
                                            },
                                            {
                                                "text": "Where do spacing, length or orientation change enough to require a separate zone?",
                                                "kind": "boundary",
                                                "id": "tooth-zone-dimensions-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "tooth-contact-profile",
                                "name": "Tooth contact profile",
                                "description": "Describe the surfaces that encounter strands and potentially the scalp or skin.",
                                "findings": [
                                    {
                                        "id": "tips-edges-and-roots",
                                        "name": "Tips, edges and roots",
                                        "description": "Record tip shape, edge finish and tooth-root transitions relevant to smooth passage and contact.",
                                        "questions": [
                                            {
                                                "text": "What tip shapes, edge profiles and root transitions are present in each tooth zone?",
                                                "kind": "definition",
                                                "id": "tips-edges-and-roots-q01"
                                            },
                                            {
                                                "text": "Where are seams, burrs or abrupt transitions that require closer inspection before use?",
                                                "kind": "action",
                                                "id": "tips-edges-and-roots-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "comb-body-and-material-behaviour",
                        "name": "Comb body and material behaviour",
                        "description": "Capture how the spine, grip and materials support controlled movement of the teeth.",
                        "rationale": "The same tooth spacing can behave differently when the teeth flex, the spine twists or the grip becomes difficult to control.",
                        "layers": [
                            {
                                "id": "grip-and-force-transfer",
                                "name": "Grip and force transfer",
                                "description": "Identify how the user holds the comb and controls the working tooth zone.",
                                "findings": [
                                    {
                                        "id": "handling-features",
                                        "name": "Handling features",
                                        "description": "Record the usable grip, spine support and any tail or folding feature that changes handling.",
                                        "questions": [
                                            {
                                                "text": "Where is the intended grip, and how does it position the active teeth or parting tip?",
                                                "kind": "definition",
                                                "id": "handling-features-q01"
                                            },
                                            {
                                                "text": "Can the intended operator maintain control under the expected dry, wet or product-coated conditions?",
                                                "kind": "action",
                                                "id": "handling-features-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "material-and-flex",
                                "name": "Material and flex",
                                "description": "Record component materials and evidence about their response during use.",
                                "findings": [
                                    {
                                        "id": "working-material-response",
                                        "name": "Working material response",
                                        "description": "Connect material identification and observed flexibility to the proposed working conditions.",
                                        "questions": [
                                            {
                                                "text": "What evidence identifies the tooth, spine and coating materials?",
                                                "kind": "provenance",
                                                "id": "working-material-response-q01"
                                            },
                                            {
                                                "text": "How much do the teeth or spine deflect under a stated non-damaging test load?",
                                                "kind": "measurement",
                                                "id": "working-material-response-q02"
                                            },
                                            {
                                                "text": "What documented limits apply to exposure to heat, water or grooming products?",
                                                "kind": "boundary",
                                                "id": "working-material-response-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "strand-task-fit",
                        "name": "Strand and task fit",
                        "description": "Assess this comb against the particular strands, contact context and intended result.",
                        "rationale": "A comb's identity does not establish that it is suitable for every strand type or grooming action.",
                        "layers": [
                            {
                                "id": "target-and-zone-selection",
                                "name": "Target and zone selection",
                                "description": "Relate tooth geometry to the target section and intended separation or arrangement.",
                                "findings": [
                                    {
                                        "id": "use-context-match",
                                        "name": "Use context match",
                                        "description": "Record the intended strands and task, then identify the candidate working zone and evidence for its suitability.",
                                        "questions": [
                                            {
                                                "text": "What strands, section thickness, tangle state and wetness will this comb encounter?",
                                                "kind": "definition",
                                                "id": "use-context-match-q01"
                                            },
                                            {
                                                "text": "Which tooth zone is suitable for the intended result, and what supports that choice?",
                                                "kind": "action",
                                                "id": "use-context-match-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "pass-and-retention-behaviour",
                                "name": "Pass and retention behaviour",
                                "description": "Observe whether the comb performs its assigned role without unacceptable resistance or loss of control.",
                                "findings": [
                                    {
                                        "id": "use-continuation-decision",
                                        "name": "Use continuation decision",
                                        "description": "Record task-specific observations that justify continuing, adjusting or stopping a combing or retention action.",
                                        "questions": [
                                            {
                                                "text": "During a permitted trial, does the comb pass through or remain positioned as intended, and where does it catch, slip or flex?",
                                                "kind": "measurement",
                                                "id": "use-continuation-decision-q01"
                                            },
                                            {
                                                "text": "What observed resistance, discomfort, strand damage or instability requires stopping or changing the method?",
                                                "kind": "action",
                                                "id": "use-continuation-decision-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "tooth-condition-and-reuse",
                        "name": "Tooth condition and reuse",
                        "description": "Determine whether damage or retained material prevents the comb from returning to its intended task.",
                        "rationale": "Closely spaced teeth and tooth roots create inspection and cleaning needs that a general object-condition label would miss.",
                        "layers": [
                            {
                                "id": "damage-at-working-surfaces",
                                "name": "Damage at working surfaces",
                                "description": "Locate defects in teeth, tips and their supporting spine.",
                                "findings": [
                                    {
                                        "id": "working-integrity-decision",
                                        "name": "Working integrity decision",
                                        "description": "Record missing, bent, rough or fractured features and their effect on the usable tooth zones.",
                                        "questions": [
                                            {
                                                "text": "Which teeth, tips or spine sections are damaged, and what change in geometry or finish is observable?",
                                                "kind": "measurement",
                                                "id": "working-integrity-decision-q01"
                                            },
                                            {
                                                "text": "Does the defect require withdrawing the whole comb from the intended use, and what supports that decision?",
                                                "kind": "action",
                                                "id": "working-integrity-decision-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "gap-cleaning-and-readiness",
                                "name": "Gap cleaning and readiness",
                                "description": "Inspect retained material and establish whether a supported cleaning process has made the comb ready for reuse.",
                                "findings": [
                                    {
                                        "id": "cleaning-evidence-and-release",
                                        "name": "Cleaning evidence and release",
                                        "description": "Distinguish visible cleanliness from any additional reuse requirements imposed by the actual use setting.",
                                        "questions": [
                                            {
                                                "text": "What strands, residue or soil remain between the teeth, at their roots or in body joints?",
                                                "kind": "measurement",
                                                "id": "cleaning-evidence-and-release-q01"
                                            },
                                            {
                                                "text": "Which material-compatible cleaning method is supported, and what record shows it was completed?",
                                                "kind": "provenance",
                                                "id": "cleaning-evidence-and-release-q02"
                                            },
                                            {
                                                "text": "What further inspection or setting-specific requirement must be satisfied before the comb is reused or shared?",
                                                "kind": "action",
                                                "id": "cleaning-evidence-and-release-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "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": [
                                            "Dressing or fine-tooth hair comb",
                                            "Wide-tooth or detangling comb",
                                            "Lice or nit comb (very close-set, often metal)",
                                            "Pocket or folding comb",
                                            "Rattail or sectioning comb (thin tail used to part hair)",
                                            "Ornamental hair comb (including Spanish peineta and Japanese kushi)",
                                            "Textile or wool comb used to align fibres for worsted spinning",
                                            "Animal-grooming comb (including curry comb and pet flea comb)"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of comb 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": "Q162857",
                                                "note": "Item for the toothed grooming/processing implement, not honeycomb or cockscomb."
                                            },
                                            {
                                                "scheme": "Harmonized System (WCO)",
                                                "value_or_pattern": "9615; 9615.11 (hard rubber or plastics); 9615.19 (other)",
                                                "note": "Customs heading covering combs and similar hair ornaments; excludes electric hair appliances of 8516."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of comb 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": [
                                            "Harmonized System heading 9615 - World Customs Organization (commodity classification for trade).",
                                            "Regulation (EU) 2023/988 General Product Safety - European Union (consumer hair combs as general consumer products).",
                                            "Sikh Rehat Maryada - Shiromani Gurdwara Parbandhak Committee (kangha as a prescribed article of faith, typically wooden)."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of comb 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": [
                                            "Daily personal hair grooming and detangling, including on wet hair with wide-tooth combs.",
                                            "Salon and barber work: sectioning, cutting guides, and finishing with rattail or dressing combs.",
                                            "School and household lice checks and nit removal with close-set metal combs.",
                                            "Worsted mills: mechanical wool combing to remove short fibre and align remaining fibres.",
                                            "Dress ornament: peineta with mantilla in Spain; decorative kushi in Japanese hairdressing.",
                                            "Carried and used to keep kesh neat by initiated Sikhs (kangha).",
                                            "Equine and pet grooming to lift dirt, loose hair or parasites."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of comb 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 (personal hair comb)",
                                                "typical_range": "80-220",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "tooth pitch (dressing comb)",
                                                "typical_range": "1-3",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "tooth pitch (nit/lice comb)",
                                                "typical_range": "0.1-0.3",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "tooth pitch (wide-tooth detangling comb)",
                                                "typical_range": "4-10",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "mass (personal comb)",
                                                "typical_range": "5-40",
                                                "unit": "g"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of comb 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": [
                                            "Broken teeth leaving sharp stubs that scratch scalp or skin.",
                                            "Hair breakage from forcing a fine-tooth comb through tangles, especially wet hair.",
                                            "Sharing combs spreading head lice and some scalp infections.",
                                            "Static charge on plastic combs causing flyaway hair and discomfort.",
                                            "Nickel or plastic-additive contact dermatitis from metal or cheap moulded combs.",
                                            "Choking hazard from small pocket combs and broken teeth in young children.",
                                            "Ineffective lice control if tooth gap is wider than nit attachment or if hair is not systematically sectioned."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of comb 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": [
                                            "English 'comb' vs Spanish peine (grooming) and peineta (large ornamental comb).",
                                            "Japanese kushi and related kanzashi ornaments as dress objects, not only tools.",
                                            "Punjabi/Sikh kangha: typically a small wooden comb worn in the hair.",
                                            "Afro pick and wide-tooth practice concentrated in African-diaspora hair care; fine-tooth dressing combs dominate European salon kits.",
                                            "Horn, wood and metal remain common in parts of South Asia and Africa; injection-moulded polymer dominates mass retail in Europe, North America and East Asia."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of comb 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": "hairbrush",
                                                "difference": "A brush presents many bristles or pins from a pad or cushion; a comb has one (sometimes two) row of rigid teeth on a spine."
                                            },
                                            {
                                                "name": "Afro pick (lift pick)",
                                                "difference": "Long, widely spaced teeth and usually a distinct handle (often fist-shaped); used to lift coiled hair rather than to pack it into a flat aligned sheet. Some catalogues treat it as a comb subtype."
                                            },
                                            {
                                                "name": "carding cloth / hand card",
                                                "difference": "Many staggered rows of hooked wire pins that tease fibre into a web; a comb has aligned teeth meant to parallelise and drop short fibre, not to card."
                                            },
                                            {
                                                "name": "hackle",
                                                "difference": "A board or block of dense upright pins for flax or hemp; larger, stationary, and not a hand-spine comb even though the action is related."
                                            },
                                            {
                                                "name": "hair clip / barrette",
                                                "difference": "A fastener that clamps hair in place; a comb may hold hair only by friction of teeth and is primarily passed through hair."
                                            },
                                            {
                                                "name": "honeycomb",
                                                "difference": "A hexagonal wax cell structure built by bees, not a toothed tool; English 'comb' is shared only as a homonym."
                                            },
                                            {
                                                "name": "cockscomb (caruncle)",
                                                "difference": "Fleshy crest on a bird's head, not an artefact."
                                            },
                                            {
                                                "name": "music-box or harmonica comb",
                                                "difference": "In instruments, 'comb' names a toothed tuned plate or the slotted harmonica body; function is acoustic, not grooming or fibre alignment."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of comb this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does vr.tr.comb include retaining hair combs, animal grooming combs, specialised removal combs and powered or heated variants, or do existing registry entries own some of these?",
                "Which existing Vercy world models already cover combs or their specialised forms and should supply the single publication of record?",
                "Which measurements and practical observations reliably establish compatibility between tooth geometry, target strands and task without unsupported universal thresholds?",
                "What manufacturer evidence supports material-specific cleaning, heat exposure and reuse limits for the comb variants included?",
                "Which inspection criteria justify retirement, particularly for subtle tooth roughness, cracks or deformation that may be difficult to observe?"
            ],
            "statistics": {
                "bundles": 6,
                "layers": 11,
                "findings": 18,
                "questions": 30
            }
        },
        "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 comb, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise a comb, assess whether its teeth and body are suitable for a particular task, and decide how it may be used, cleaned, stored or retired.",
            "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: hand carder, hot comb, combs in Basque mythology, Beinkamm, comb mane, composite comb, Oroku-gushi, tail comb, heru, horn comb, ivory comb, liturgical comb.",
                "18 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 111 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 comb, 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": [
                        "hand carder",
                        "hot comb",
                        "combs in Basque mythology",
                        "Beinkamm",
                        "comb mane",
                        "composite comb",
                        "Oroku-gushi",
                        "tail comb",
                        "heru",
                        "horn comb",
                        "ivory comb",
                        "liturgical comb"
                    ]
                }
            ],
            "standing": "Described in 111 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 18 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 comb from another, and a comb 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 comb, 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 comb, 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 comb 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 comb, 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 comb, 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 comb 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 comb 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 comb, 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 comb, 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 comb 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 comb from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a comb, 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 comb, 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 comb 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 comb 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 comb, 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 comb, 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 comb 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 comb is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a comb, 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 comb, 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 comb 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 comb is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a comb, 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 comb, 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 comb 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 comb 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 comb is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a comb, 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 comb, 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 comb 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 comb 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 comb, 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 comb, 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 comb 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 comb 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 comb between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a comb, 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 comb, 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 comb 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 comb, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a comb 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 comb, 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 comb, 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 comb 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 comb 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 comb 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 comb, 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 comb 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 comb 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 comb 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 comb 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 comb 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 comb, 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 comb 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 comb and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a comb, 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 comb, 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 comb 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 comb is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a comb, 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 comb, 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 comb 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
            }
        }
    }
}