{
    "model": {
        "rank": 3185,
        "code": "thing-q104363",
        "model_id": "vr.tr.anvil",
        "name": "anvil",
        "purpose": "Enable an agent to recognise an anvil, assess its working surfaces and support, and judge its suitability for a proposed metalworking operation.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q104363/",
        "tier": 2,
        "score": 89,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "Turdus philomelos anvil",
                "peening anvil"
            ],
            "aliasCount": 2,
            "merged": 2,
            "knownIn": 89,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": "vr.tr.anvil",
            "source": {
                "dataset": "wikidata",
                "item": "Q104363",
                "url": "https://www.wikidata.org/wiki/Q104363",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T14:05:03Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 25.3,
                        "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: 01a07c2e-aa8f-7412-8f96-d87c2844d6fe\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: anvil\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 546 things:\n# Batch 003: 1001 registered",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 75.7,
                        "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: 01a07c2e-aa99-7d83-8127-4c2e9201a2c2\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: anvil\nRegistry id: vr.tr.anvil\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext for "
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q104363",
                "registryId": "vr.tr.anvil",
                "name": "anvil",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q104363/",
            "model": {
                "registry_id": "vr.tr.anvil",
                "name": "anvil",
                "purpose": "Enable an agent to recognise an anvil, assess its working surfaces and support, and judge its suitability for a proposed metalworking operation.",
                "definition": "An anvil is a passive tool with a hard working surface and a supporting body that resists hammer blows while metal or another workpiece is forged, shaped, straightened or otherwise worked.",
                "scope_statement": "This model owns the anvil as a kind of passive metalworking support tool, including its working geometry, material construction, mounting requirements and service condition; it excludes anatomical, meteorological and other senses of the name.",
                "in_scope": [
                    "Anvil forms used in forging, forming and related metalworking",
                    "Faces, horns, edges, steps and tool-receiving holes where present",
                    "Body and working-surface construction",
                    "Mass, working dimensions and mounting interfaces",
                    "Condition and suitability for specified tools, workpieces and operations"
                ],
                "out_of_scope": [
                    "Hammers, presses and other tools that supply the working force",
                    "Forges, furnaces and workpiece heating processes",
                    "Removable hardy tools, stakes and other anvil accessories as separate tool kinds",
                    "Stands, foundations and workshop layouts as independently managed objects",
                    "Product lines, individual asset records and ownership histories",
                    "The anatomical incus, anvil clouds and anvils incorporated into measuring instruments"
                ],
                "distinguishing_features": [
                    "Its intended working role is to support a workpiece and resist applied metalworking forces rather than deliver the blow.",
                    "Its working surfaces are intended for direct forming contact; a general bench or pedestal primarily supports equipment or materials.",
                    "Identification depends on working role and construction, not a horn-shaped silhouette: hornless anvils remain possible.",
                    "A flat reference surface alone does not establish an anvil; a surface plate is intended for inspection rather than hammer forming.",
                    "Distinguish a standalone anvil from a removable stake or forming insert by whether it provides the principal support body or is tooling carried by another support."
                ],
                "characteristics": [
                    {
                        "name": "Intended metalworking role",
                        "kind": "category",
                        "unit_or_values": "general forging, bladesmithing, farriery, jewellery forming, other documented role, unknown",
                        "why_it_matters": "The intended role determines which surfaces, dimensions and tooling interfaces are relevant."
                    },
                    {
                        "name": "Body mass",
                        "kind": "measurement",
                        "unit_or_values": "kg",
                        "why_it_matters": "Mass informs handling, support requirements and suitability for the proposed impact work."
                    },
                    {
                        "name": "Working-face dimensions",
                        "kind": "measurement",
                        "unit_or_values": "usable length and width in mm",
                        "why_it_matters": "These dimensions constrain workpiece placement and supported contact area."
                    },
                    {
                        "name": "Working geometry",
                        "kind": "category",
                        "unit_or_values": "flat face, round horn, square horn, step, other documented surface; presence and arrangement",
                        "why_it_matters": "Available surfaces determine which shaping operations the anvil can support."
                    },
                    {
                        "name": "Body and face construction",
                        "kind": "category",
                        "unit_or_values": "documented material, integral or attached face, manufacturing method, unknown",
                        "why_it_matters": "Construction affects interpretation of wear, cracking and proposed repairs."
                    },
                    {
                        "name": "Working-surface hardness",
                        "kind": "measurement",
                        "unit_or_values": "reported hardness with scale, test location and method; unknown if unverified",
                        "why_it_matters": "Hardness evidence helps assess resistance to indentation and compatibility with intended contact."
                    },
                    {
                        "name": "Tool-hole geometry",
                        "kind": "measurement",
                        "unit_or_values": "opening shape, dimensions and usable depth in mm; absent where applicable",
                        "why_it_matters": "Tool fit and punching clearance depend on actual geometry."
                    },
                    {
                        "name": "Face and edge condition",
                        "kind": "state",
                        "unit_or_values": "mapped wear, dents, chips, cracks, corrosion and edge radii; unassessed",
                        "why_it_matters": "Local defects can mark workpieces or restrict safe working areas."
                    },
                    {
                        "name": "Mounting relationship",
                        "kind": "relation",
                        "unit_or_values": "support type, bearing contact, retention method and observed movement",
                        "why_it_matters": "The anvil and support must function together without unacceptable rocking or displacement."
                    },
                    {
                        "name": "Service disposition",
                        "kind": "state",
                        "unit_or_values": "unassessed, suitable for specified operation, restricted, withdrawn pending assessment",
                        "why_it_matters": "An agent needs an operation-specific decision rather than an unsupported universal fitness label."
                    }
                ],
                "affordances": [
                    "Select an appropriate face, horn or edge for a specified forming operation.",
                    "Check whether a removable tool fits an available hole and has adequate clearance.",
                    "Compare anvil dimensions, construction and condition against a proposed workpiece and striking method.",
                    "Assess mounting stability and identify adjustments needed before use.",
                    "Map damaged working areas and restrict operations that would load them.",
                    "Plan inspection, cleaning or specialist repair using documented construction and service history."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "anvil-identity",
                        "name": "Anvil identity",
                        "description": "Establish the metalworking sense and the boundaries of the anvil kind.",
                        "rationale": "The name covers unrelated senses, while legitimate metalworking anvils do not all share the familiar horned form.",
                        "layers": [
                            {
                                "id": "working-role",
                                "name": "Working role",
                                "description": "Identify the support function that makes the object an anvil.",
                                "findings": [
                                    {
                                        "id": "principal-forming-support",
                                        "name": "Principal forming support",
                                        "description": "Record whether the object provides the working support against which metal is formed.",
                                        "questions": [
                                            {
                                                "text": "What intended operation establishes this object as an anvil?",
                                                "kind": "definition",
                                                "id": "principal-forming-support-q01"
                                            },
                                            {
                                                "text": "Does it provide the principal working support, or is it an insert carried by another tool?",
                                                "kind": "boundary",
                                                "id": "principal-forming-support-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "form-and-specialisation",
                                "name": "Form and specialisation",
                                "description": "Relate anvil form to its intended trade without treating a product design as the whole kind.",
                                "findings": [
                                    {
                                        "id": "documented-anvil-form",
                                        "name": "Documented anvil form",
                                        "description": "Record the form designation and the evidence connecting it to an intended use.",
                                        "questions": [
                                            {
                                                "text": "Which trade or forming tasks is this anvil form intended to serve?",
                                                "kind": "definition",
                                                "id": "documented-anvil-form-q01"
                                            },
                                            {
                                                "text": "What documentation supports the form designation rather than an identification based only on appearance?",
                                                "kind": "provenance",
                                                "id": "documented-anvil-form-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "working-surfaces",
                        "name": "Working surfaces",
                        "description": "Describe the contact geometry available for supporting and shaping workpieces.",
                        "rationale": "Anvil suitability depends on local surface geometry, including deliberately rounded edges and specialised forming areas.",
                        "layers": [
                            {
                                "id": "face-and-edges",
                                "name": "Face and edges",
                                "description": "Characterise the usable face and its transitions.",
                                "findings": [
                                    {
                                        "id": "usable-contact-geometry",
                                        "name": "Usable contact geometry",
                                        "description": "Record face dimensions, profile and edge radii in relation to proposed work.",
                                        "questions": [
                                            {
                                                "text": "What are the usable face dimensions and measured departures from the intended profile?",
                                                "kind": "measurement",
                                                "id": "usable-contact-geometry-q01"
                                            },
                                            {
                                                "text": "Which edge sections and radii suit the proposed bend or shoulder without unwanted marking?",
                                                "kind": "action",
                                                "id": "usable-contact-geometry-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "horns-and-secondary-surfaces",
                                "name": "Horns and secondary surfaces",
                                "description": "Characterise projecting and stepped working areas where present.",
                                "findings": [
                                    {
                                        "id": "local-forming-profiles",
                                        "name": "Local forming profiles",
                                        "description": "Record horn profiles, steps and other surfaces without assuming that every surface accepts the same treatment.",
                                        "questions": [
                                            {
                                                "text": "Which horns, steps or secondary working surfaces are present, and what are their dimensions?",
                                                "kind": "measurement",
                                                "id": "local-forming-profiles-q01"
                                            },
                                            {
                                                "text": "Which operations are supported on each surface by the documented design or an appropriate assessment?",
                                                "kind": "action",
                                                "id": "local-forming-profiles-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "construction-and-response",
                        "name": "Construction and response",
                        "description": "Represent the anvil body, working face and evidence of their response to use.",
                        "rationale": "Similar-looking anvils may have different materials, face attachments and repair constraints.",
                        "layers": [
                            {
                                "id": "body-and-face",
                                "name": "Body and face",
                                "description": "Identify material construction and the relationship between the working surface and body.",
                                "findings": [
                                    {
                                        "id": "material-and-face-evidence",
                                        "name": "Material and face evidence",
                                        "description": "Separate documented construction from visual guesses about material or hardening.",
                                        "questions": [
                                            {
                                                "text": "What evidence identifies the body material and whether the face is integral or attached?",
                                                "kind": "provenance",
                                                "id": "material-and-face-evidence-q01"
                                            },
                                            {
                                                "text": "What hardness measurements or treatment records exist, and which working areas do they cover?",
                                                "kind": "measurement",
                                                "id": "material-and-face-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "mass-and-working-response",
                                "name": "Mass and working response",
                                "description": "Capture mass and any assessed mechanical response with the conditions of assessment.",
                                "findings": [
                                    {
                                        "id": "response-under-stated-conditions",
                                        "name": "Response under stated conditions",
                                        "description": "Record working-response observations without using rebound or sound alone as a universal quality verdict.",
                                        "questions": [
                                            {
                                                "text": "What is the anvil's measured or documented mass?",
                                                "kind": "measurement",
                                                "id": "response-under-stated-conditions-q01"
                                            },
                                            {
                                                "text": "If rebound, vibration or acoustic response has been assessed, what method, location and mounting conditions were used?",
                                                "kind": "provenance",
                                                "id": "response-under-stated-conditions-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "tooling-and-support",
                        "name": "Tooling and support",
                        "description": "Describe how the anvil receives tooling and transfers working forces into its support.",
                        "rationale": "Tool-hole fit, underside clearance and mounting stability can determine whether an otherwise suitable anvil can perform an operation.",
                        "layers": [
                            {
                                "id": "tool-receiving-holes",
                                "name": "Tool-receiving holes",
                                "description": "Represent hardy holes, pritchel holes and other openings where present.",
                                "findings": [
                                    {
                                        "id": "tool-fit-and-clearance",
                                        "name": "Tool fit and clearance",
                                        "description": "Record opening geometry and the clearance required by inserted tooling or punching work.",
                                        "questions": [
                                            {
                                                "text": "What are the shape, dimensions and usable depth of each hole?",
                                                "kind": "measurement",
                                                "id": "tool-fit-and-clearance-q01"
                                            },
                                            {
                                                "text": "Does the proposed tool or punching operation have suitable fit and unobstructed clearance through the anvil and support?",
                                                "kind": "action",
                                                "id": "tool-fit-and-clearance-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "base-and-mounting",
                                "name": "Base and mounting",
                                "description": "Describe bearing surfaces and attachment to the supporting structure.",
                                "findings": [
                                    {
                                        "id": "stable-working-support",
                                        "name": "Stable working support",
                                        "description": "Assess the installed relationship between anvil, retention system and support.",
                                        "questions": [
                                            {
                                                "text": "How does the base bear on the support, and how is the anvil retained?",
                                                "kind": "definition",
                                                "id": "stable-working-support-q01"
                                            },
                                            {
                                                "text": "What assessment establishes adequate stability and access for the proposed work?",
                                                "kind": "action",
                                                "id": "stable-working-support-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "condition-and-use-decisions",
                        "name": "Condition and use decisions",
                        "description": "Connect observed damage, repair history and operating constraints to specific use decisions.",
                        "rationale": "An anvil may remain useful despite local wear, while particular defects or undocumented repairs require restrictions.",
                        "layers": [
                            {
                                "id": "damage-and-repair-history",
                                "name": "Damage and repair history",
                                "description": "Locate deterioration and distinguish it from intended working geometry.",
                                "findings": [
                                    {
                                        "id": "working-area-condition-map",
                                        "name": "Working-area condition map",
                                        "description": "Map damage and repaired areas so condition can be evaluated where contact will occur.",
                                        "questions": [
                                            {
                                                "text": "Where are dents, chips, cracks, corrosion or suspected face separation, and what are their measured extents?",
                                                "kind": "measurement",
                                                "id": "working-area-condition-map-q01"
                                            },
                                            {
                                                "text": "What records identify welding, grinding, resurfacing or heat treatment performed during repair?",
                                                "kind": "provenance",
                                                "id": "working-area-condition-map-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "operation-specific-disposition",
                                "name": "Operation-specific disposition",
                                "description": "Determine permitted work and necessary precautions from the actual anvil and installation.",
                                "findings": [
                                    {
                                        "id": "permitted-work-and-restrictions",
                                        "name": "Permitted work and restrictions",
                                        "description": "Record the basis for use, restricted contact areas, further inspection or withdrawal.",
                                        "questions": [
                                            {
                                                "text": "Which proposed combinations of striking tool, workpiece and contact area are supported by the available evidence?",
                                                "kind": "action",
                                                "id": "permitted-work-and-restrictions-q01"
                                            },
                                            {
                                                "text": "What restrictions or protective measures are required for observed chipping risk, workpiece ejection, noise or mounting movement?",
                                                "kind": "action",
                                                "id": "permitted-work-and-restrictions-q02"
                                            },
                                            {
                                                "text": "Which manufacturer instructions or applicable standards, identified by issuing body and scope, govern this use decision?",
                                                "kind": "provenance",
                                                "id": "permitted-work-and-restrictions-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-confidence-notes",
                                        "name": "Check these first",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "The tool sense is inferred from the name and domain because no sense was recorded.",
                                            "The mass range is an approximate workshop range, not a specification or limit; specialist anvils vary considerably.",
                                            "Construction, face hardness, dimensions and weight-marking conventions require verification for the particular pattern, maker and period."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of anvil this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "London-pattern blacksmith's anvil",
                                            "Double-horn anvil",
                                            "Farrier's anvil",
                                            "Stake anvil",
                                            "Jeweller's anvil",
                                            "Saw-maker's anvil"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of anvil this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Supporting hot metal during hand forging, with power supplied by the operator's hammer blows.",
                                            "Shaping and fitting horseshoes.",
                                            "Straightening metal parts and setting rivets.",
                                            "Supporting small metal components during jewellery making.",
                                            "Supporting saw blades during hammer straightening and tensioning."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of anvil this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "quantity": "Mass of a general workshop forging anvil",
                                                "typical_range": "Approximately 20-200; portable examples can be lighter and large stationary examples heavier",
                                                "unit": "kg"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of anvil this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Face or edge chipping can eject sharp fragments, particularly when brittle or damaged surfaces receive concentrated blows.",
                                            "Repeated use or unsuitable loading can dent, round or otherwise deform the working surface.",
                                            "A welded steel face can separate from its supporting body if the bond fails.",
                                            "An insecure mounting can allow the anvil to shift or tip; handling its mass presents crushing hazards.",
                                            "Hammering produces potentially harmful noise and can eject hot scale or workpieces."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of anvil this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "The London pattern is associated with British practice, while several continental European patterns use two horns; these designs are now used internationally.",
                                            "Historical weight markings may use kilograms, pounds or hundredweight-based notation, depending on origin and date."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of anvil this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "name": "Swage block",
                                                "difference": "A swage block principally provides shaped recesses and openings for forming work, whereas an anvil principally provides a surface that supports hammer blows."
                                            },
                                            {
                                                "name": "Bench block",
                                                "difference": "A bench block is usually a compact flat support for small-scale metalworking; its boundary with a small anvil is conventional rather than absolute."
                                            },
                                            {
                                                "name": "Forging die",
                                                "difference": "A forging die has working geometry intended to impose a particular shape, whereas a general-purpose anvil supports many shapes and operations."
                                            },
                                            {
                                                "name": "Incus",
                                                "difference": "The anatomical anvil is a middle-ear bone; this entry covers the metalworking tool."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of anvil this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does the registry intend only standalone metalworking anvils, or also powered-hammer anvil blocks and other integral reaction supports?",
                "Where should the catalogue draw the boundary between small anvils, bench blocks and removable forming stakes?",
                "Which authoritative sources establish construction, hardness and dimensional ranges for the principal anvil forms?",
                "Which standards or manufacturer criteria apply to tooling fit, mounting, inspection and service withdrawal, and do any certification marks apply?",
                "What evidence is sufficient to assess suspected face separation or repaired working surfaces without relying on informal rebound or ringing tests?"
            ],
            "statistics": {
                "bundles": 6,
                "layers": 11,
                "findings": 17,
                "questions": 28
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "device, machine or tool",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a anvil, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an agent to recognise an anvil, assess its working surfaces and support, and judge its suitability for a proposed metalworking operation.",
            "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: Turdus philomelos anvil, peening anvil.",
                "2 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 89 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 anvil, 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": [
                        "Turdus philomelos anvil",
                        "peening anvil"
                    ]
                }
            ],
            "standing": "Described in 89 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 2 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 anvil from another, and a anvil 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 anvil, 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 anvil, 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 anvil 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 anvil, 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 anvil, 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 anvil 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 anvil 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 anvil, 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 anvil, 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 anvil 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 anvil from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a anvil, 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 anvil, 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 anvil 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 anvil 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 anvil, 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 anvil, 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 anvil 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 anvil is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a anvil, 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 anvil, 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 anvil 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 anvil is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a anvil, 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 anvil, 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 anvil 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 anvil 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 anvil is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a anvil, 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 anvil, 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 anvil 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 anvil 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 anvil, 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 anvil, 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 anvil 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 anvil 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 anvil between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a anvil, 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 anvil, 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 anvil 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 anvil, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a anvil 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 anvil, 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 anvil, 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 anvil 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 anvil 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 anvil 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 anvil, 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 anvil 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 anvil 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 anvil 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 anvil 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 anvil 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 anvil, 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 anvil 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 anvil and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a anvil, 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 anvil, 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 anvil 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 anvil is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a anvil, 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 anvil, 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 anvil 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
            }
        }
    }
}