{
    "model": {
        "rank": 1749,
        "code": "thing-q37077",
        "model_id": "vr.tr.nail-q37077",
        "name": "nail",
        "purpose": "Enable an AI agent to recognise a biological nail, record its visible condition and attachment, and judge whether observation, grooming, protection or further assessment is appropriate.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.LIV",
        "industry": "",
        "version": "",
        "url": "/models/thing/q37077/",
        "tier": 2,
        "score": 129,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "rail spike",
                "Pasak",
                "roman nail",
                "clinch nail",
                "wakugi",
                "upholstery nail",
                "picture nail",
                "magnetic nail",
                "horseshoe nail",
                "jobent nail",
                "Repère",
                "chatón",
                "hobnail",
                "HurriQuake",
                "Reginnaglar",
                "fiddle key nail"
            ],
            "aliasCount": 16,
            "merged": 16,
            "knownIn": 129,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": "vr.tr.nail-quantity",
            "source": {
                "dataset": "wikidata",
                "item": "Q37077",
                "url": "https://www.wikidata.org/wiki/Q37077",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-06T21:46:34Z",
                "providers": [
                    "Codex"
                ],
                "missingProviders": [
                    "Grok"
                ],
                "pass": 2,
                "cost": {
                    "grok": {
                        "usd": null,
                        "turns": null,
                        "seconds": 2.4,
                        "error": "Error: Internal error: {\n  \"message\": \"API error (status 402 Payment Required): Grok Build usage balance exhausted\",\n  \"http_status\": 402\n}",
                        "retried": true
                    },
                    "codex": {
                        "seconds": 56.2,
                        "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: 01a078af-235a-7252-9817-aebf0908c347\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: nail\nRegistry id: vr.tr.nail-q37077\nPlane / domain: PHY / PHY.LIV\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA Vercy "
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q37077",
                "registryId": "vr.tr.nail-q37077",
                "name": "nail",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.LIV"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q37077/",
            "model": {
                "registry_id": "vr.tr.nail-q37077",
                "name": "nail",
                "purpose": "Enable an AI agent to recognise a biological nail, record its visible condition and attachment, and judge whether observation, grooming, protection or further assessment is appropriate.",
                "definition": "",
                "scope_statement": "This model owns an individual fingernail or toenail as a biological structure, including its plate, growth context and relationships to supporting tissues; this interpretation of the undefined registry entry remains provisional.",
                "in_scope": [
                    "Identification of the digit, body side and organism bearing the nail",
                    "Nail plate shape, dimensions, surface and visible colour",
                    "Plate attachment and boundaries with the nail bed, folds and free edge",
                    "Observed growth, wear, breakage and changes over time",
                    "Nail-specific exposure, grooming, coverings and intervention constraints"
                ],
                "out_of_scope": [
                    "Metal nails and other construction fasteners",
                    "The anatomy and function of the whole finger, toe, hand or foot",
                    "Systemic diseases and their diagnosis or treatment",
                    "Independent models of surrounding skin, wounds or infections",
                    "Artificial nail products, cosmetic formulations and grooming instruments",
                    "Claws, hooves and other related structures pending confirmation of registry scope"
                ],
                "distinguishing_features": [
                    "Check that the referent is a biological plate associated with a digit, rather than a manufactured fastening pin.",
                    "Locate a plate seated over a nail bed with proximal and lateral tissue boundaries; a loose hard fragment alone does not establish an intact nail.",
                    "Distinguish the biological plate from polish, gel or an artificial extension by recording visible boundaries and application history.",
                    "Distinguish the nail plate from adjacent callused skin by its discrete plate boundary and attachment over the nail bed.",
                    "Use organism identity and anatomical context when distinguishing a nail from a claw or hoof; shape alone may leave the identification unresolved."
                ],
                "characteristics": [
                    {
                        "name": "Anatomical identity",
                        "kind": "relation",
                        "unit_or_values": "Organism reference, hand or foot, left or right, digit identifier; unknown permitted",
                        "why_it_matters": "Prevents observations and actions from being assigned to the wrong nail."
                    },
                    {
                        "name": "Plate dimensions",
                        "kind": "measurement",
                        "unit_or_values": "Length, width and thickness in mm, with landmarks and method",
                        "why_it_matters": "Supports comparisons of growth, wear and shape without confusing different measurement conventions."
                    },
                    {
                        "name": "Free-edge length",
                        "kind": "measurement",
                        "unit_or_values": "mm beyond the observed distal attachment boundary; unassessable permitted",
                        "why_it_matters": "Helps assess snagging and the extent of an edge available for grooming."
                    },
                    {
                        "name": "Plate curvature and outline",
                        "kind": "category",
                        "unit_or_values": "Described longitudinal curvature, transverse curvature and edge outline",
                        "why_it_matters": "Records how the plate fits the digit and whether its edges contact surrounding tissue."
                    },
                    {
                        "name": "Visible colour and opacity",
                        "kind": "category",
                        "unit_or_values": "Colour, translucency, distribution and observation conditions",
                        "why_it_matters": "Makes changes traceable while distinguishing appearance from an inferred cause."
                    },
                    {
                        "name": "Surface and structural integrity",
                        "kind": "state",
                        "unit_or_values": "Observed ridges, pits, splits, peeling, breaks or material loss, with location and extent",
                        "why_it_matters": "Identifies fragile or catching areas and supports repeat observation."
                    },
                    {
                        "name": "Attachment condition",
                        "kind": "state",
                        "unit_or_values": "Apparently attached, partly separated, detached or unassessable, with mapped extent",
                        "why_it_matters": "Constrains handling and distinguishes plate damage from loss of attachment."
                    },
                    {
                        "name": "Local symptoms",
                        "kind": "state",
                        "unit_or_values": "Reported pain, tenderness or altered sensation; severity, timing and unknown status",
                        "why_it_matters": "Adds information that appearance alone cannot establish when considering an action."
                    },
                    {
                        "name": "Observed growth",
                        "kind": "measurement",
                        "unit_or_values": "Landmark displacement in mm over a recorded interval; optionally mm/day",
                        "why_it_matters": "Supports longitudinal assessment without assuming a universal growth rate."
                    },
                    {
                        "name": "Applied covering",
                        "kind": "relation",
                        "unit_or_values": "Reference to polish, gel, artificial extension, dressing or other covering; none or unknown",
                        "why_it_matters": "Identifies obscured observations and constraints on access to the biological plate."
                    }
                ],
                "affordances": [
                    "Identify and photograph a particular nail using consistent anatomical labels and viewpoints.",
                    "Measure visible plate and free-edge dimensions using recorded landmarks.",
                    "Compare attachment, surface, colour and growth observations across dated assessments.",
                    "Assess whether an exposed edge is suitable for trimming or filing within the actor's competence.",
                    "Record or arrange protection from snagging, pressure or further exposure.",
                    "Defer manipulation and request qualified assessment when the observed condition or uncertainty warrants it."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "nail-identity-and-boundaries",
                        "name": "Nail identity and boundaries",
                        "description": "Establish which biological nail is represented and which visible material belongs to it.",
                        "rationale": "Digit identity and the distinction between plate, supporting tissue and applied material determine what subsequent observations mean.",
                        "layers": [
                            {
                                "id": "digit-and-organism",
                                "name": "Digit and organism",
                                "description": "Locate the nail on its bearer and resolve the intended biological referent.",
                                "findings": [
                                    {
                                        "id": "anatomical-nail-identity",
                                        "name": "Anatomical nail identity",
                                        "description": "Record the bearer, body side and digit, including unresolved identification.",
                                        "questions": [
                                            {
                                                "text": "Which organism, hand or foot, body side and digit bear this nail?",
                                                "kind": "definition",
                                                "id": "anatomical-nail-identity-q01"
                                            },
                                            {
                                                "text": "What observation or record supports identifying this structure as a nail rather than a claw, hoof or detached fragment?",
                                                "kind": "provenance",
                                                "id": "anatomical-nail-identity-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "plate-and-covering-boundaries",
                                "name": "Plate and covering boundaries",
                                "description": "Separate biological plate from adjacent tissue and applied products.",
                                "findings": [
                                    {
                                        "id": "observable-nail-boundary",
                                        "name": "Observable nail boundary",
                                        "description": "Locate visible plate margins and identify areas whose material or boundary cannot be assessed.",
                                        "questions": [
                                            {
                                                "text": "Where are the proximal margin, lateral margins and distal free edge visible?",
                                                "kind": "boundary",
                                                "id": "observable-nail-boundary-q01"
                                            },
                                            {
                                                "text": "Which areas are biological plate, applied covering or unresolved material, and what evidence supports that distinction?",
                                                "kind": "definition",
                                                "id": "observable-nail-boundary-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "plate-form-and-integrity",
                        "name": "Plate form and integrity",
                        "description": "Describe the nail plate's geometry, appearance and physical continuity.",
                        "rationale": "A nail's edge geometry and local defects affect contact, snagging and the interpretation of visible changes.",
                        "layers": [
                            {
                                "id": "plate-and-edge-geometry",
                                "name": "Plate and edge geometry",
                                "description": "Measure the plate and describe its curvature relative to the digit.",
                                "findings": [
                                    {
                                        "id": "nail-shape-and-dimensions",
                                        "name": "Nail shape and dimensions",
                                        "description": "Record dimensions with explicit landmarks and describe the edge profile.",
                                        "questions": [
                                            {
                                                "text": "What are the visible plate length, width and free-edge length, and which landmarks and method were used?",
                                                "kind": "measurement",
                                                "id": "nail-shape-and-dimensions-q01"
                                            },
                                            {
                                                "text": "How do the plate curvature and lateral edges relate to the surrounding tissue, including any visible contact or overlap?",
                                                "kind": "boundary",
                                                "id": "nail-shape-and-dimensions-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "surface-and-breaks",
                                "name": "Surface and breaks",
                                "description": "Map visible appearance and disruptions without assigning an unverified cause.",
                                "findings": [
                                    {
                                        "id": "localized-plate-observations",
                                        "name": "Localized plate observations",
                                        "description": "Record the location and extent of colour differences, surface features and discontinuities.",
                                        "questions": [
                                            {
                                                "text": "Where are colour changes, opacity differences, ridges or pits visible, and under what lighting or covering conditions?",
                                                "kind": "measurement",
                                                "id": "localized-plate-observations-q01"
                                            },
                                            {
                                                "text": "Are splits, peeling, breaks or missing areas present, and do they reach the attached portion of the plate?",
                                                "kind": "boundary",
                                                "id": "localized-plate-observations-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "attachment-and-local-condition",
                        "name": "Attachment and local condition",
                        "description": "Assess the plate's connection to its supporting tissues and record associated symptoms.",
                        "rationale": "An intact-looking plate may still have attachment problems or local symptoms that change what handling is appropriate.",
                        "layers": [
                            {
                                "id": "bed-and-fold-interface",
                                "name": "Bed and fold interface",
                                "description": "Describe visible attachment and the interfaces with surrounding folds.",
                                "findings": [
                                    {
                                        "id": "attachment-and-margin-condition",
                                        "name": "Attachment and margin condition",
                                        "description": "Map apparent separation and visible changes at the plate's tissue boundaries.",
                                        "questions": [
                                            {
                                                "text": "Which areas appear attached or separated from the nail bed, and how much of the plate can actually be assessed?",
                                                "kind": "measurement",
                                                "id": "attachment-and-margin-condition-q01"
                                            },
                                            {
                                                "text": "At which margins are swelling, broken skin, bleeding or discharge observed, and which observations belong to a linked skin or wound record?",
                                                "kind": "boundary",
                                                "id": "attachment-and-margin-condition-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "symptoms-and-use",
                                "name": "Symptoms and use",
                                "description": "Connect the nail's condition to reported discomfort and interference with activities.",
                                "findings": [
                                    {
                                        "id": "nail-associated-discomfort",
                                        "name": "Nail-associated discomfort",
                                        "description": "Record symptoms and activity limitations separately from visual findings.",
                                        "questions": [
                                            {
                                                "text": "What pain, tenderness or altered sensation is reported, by whom, and when did it begin?",
                                                "kind": "provenance",
                                                "id": "nail-associated-discomfort-q01"
                                            },
                                            {
                                                "text": "Does the nail catch, press against footwear or interfere with touch or grasping, and during which activities?",
                                                "kind": "measurement",
                                                "id": "nail-associated-discomfort-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "growth-history-and-care-decisions",
                        "name": "Growth history and care decisions",
                        "description": "Track change and establish the basis for observation, grooming, protection or assessment.",
                        "rationale": "Nail appearance reflects a changing structure whose interpretation depends on dated observations, prior care and exposure.",
                        "layers": [
                            {
                                "id": "growth-and-exposure-history",
                                "name": "Growth and exposure history",
                                "description": "Relate repeat observations to growth, trimming, injury and applied products.",
                                "findings": [
                                    {
                                        "id": "dated-nail-change",
                                        "name": "Dated nail change",
                                        "description": "Establish what changed and whether observations are comparable.",
                                        "questions": [
                                            {
                                                "text": "Between dated observations, how far did a recognisable plate landmark move, and were viewpoint and scale comparable?",
                                                "kind": "measurement",
                                                "id": "dated-nail-change-q01"
                                            },
                                            {
                                                "text": "What trimming, filing, injury, repetitive pressure or product application occurred between those observations?",
                                                "kind": "provenance",
                                                "id": "dated-nail-change-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "nail-specific-action-constraints",
                                "name": "Nail-specific action constraints",
                                "description": "Connect proposed handling to accessible edges, tissue condition and unresolved concerns.",
                                "findings": [
                                    {
                                        "id": "justified-next-action",
                                        "name": "Justified next action",
                                        "description": "Record the proposed action, its basis and the limits of available assessment.",
                                        "questions": [
                                            {
                                                "text": "For proposed trimming, filing or protection, which edge or area is involved, and what observations establish that it can be handled appropriately?",
                                                "kind": "action",
                                                "id": "justified-next-action-q01"
                                            },
                                            {
                                                "text": "Do pain, disrupted attachment, obscured boundaries or other unresolved observations require deferring manipulation and obtaining qualified assessment?",
                                                "kind": "action",
                                                "id": "justified-next-action-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does registry entry vr.tr.nail-q37077 explicitly mean human fingernails and toenails, or does it include nails of other organisms?",
                "Does the catalogue already contain a world model that owns this concept or the broader nail apparatus?",
                "Should the nail matrix, bed and folds be owned by this model or represented through relationships to neighbouring anatomical models?",
                "Which measurement landmarks and observation methods provide sufficiently repeatable nail dimensions and growth comparisons?",
                "Which evidence-based criteria should govern routine grooming, deferred manipulation and referral across different bearers and care settings?"
            ],
            "statistics": {
                "bundles": 4,
                "layers": 8,
                "findings": 8,
                "questions": 16
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "organism",
            "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 nail, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise a biological nail, record its visible condition and attachment, and judge whether observation, grooming, protection or further assessment is appropriate.",
            "characteristics": {
                "substance": "living",
                "origin": "natural",
                "agency": "autonomous",
                "mobility": "self-moving"
            },
            "whatYouCanDoWithIt": [
                "observed and measured"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: rail spike, Pasak, roman nail, clinch nail, wakugi, upholstery nail, picture nail, magnetic nail, horseshoe nail, jobent nail, Repère, chatón.",
                "16 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 129 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 nail, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "a living thing",
            "physicalCharacter": [
                "Moves under its own power or of its own accord.",
                "Acts on its own behalf.",
                "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 diagnostic characters, and those differ by life stage - the young of many kinds are mistaken for other kinds entirely. A sighting is settled by characters, a photograph and a place, not by a name alone."
            ],
            "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": [
                        "rail spike",
                        "Pasak",
                        "roman nail",
                        "clinch nail",
                        "wakugi",
                        "upholstery nail",
                        "picture nail",
                        "magnetic nail",
                        "horseshoe nail",
                        "jobent nail",
                        "Repère",
                        "chatón"
                    ]
                }
            ],
            "standing": "Described in 129 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 16 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 nail from another, and a nail 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 nail, 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 nail, 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 nail 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 nail, 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 nail, 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 nail 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 nail 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 nail, 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 nail, 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 nail 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 nail from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a nail, 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 nail, 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 nail 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 nail 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 nail, 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 nail, 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 nail 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": "Anatomy, parts and life stage.",
                                "findings": [
                                    {
                                        "id": "parts-and-materials",
                                        "name": "Parts and life stages",
                                        "description": "The parts of a nail and the stages it passes through.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a nail, 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 nail, 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 nail 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 nail is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a nail, 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 nail, 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 nail 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 nail is, how it got there and where it may go (self-moving).",
                        "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 nail is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a nail, 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 nail, 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 nail 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 nail moves on its own.",
                                "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 nail, 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 nail, 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 nail 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 nail 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 nail between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a nail, 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 nail, 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 nail 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 nail, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a nail 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 nail, 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 nail, 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 nail is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "taxonomic-placement",
                        "name": "Taxonomic placement and identification",
                        "description": "What nail is called scientifically, by whose authority, and how a specimen is recognised.",
                        "rationale": "Names change with revisions while the organism does not, so a name without its authority and date cannot be reconciled later.",
                        "layers": [
                            {
                                "id": "accepted-name",
                                "name": "Accepted name and synonymy",
                                "description": "The current binomial, its author and date, and the names it replaced.",
                                "findings": [
                                    {
                                        "id": "name-and-authority",
                                        "name": "Accepted name, authority and synonyms",
                                        "description": "What to record so a later revision can be applied without losing the old data.",
                                        "questions": [
                                            {
                                                "id": "name-and-authority-q01",
                                                "text": "What is the accepted scientific name of nail, with its author and year, and which synonyms does it absorb?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "name-and-authority-q02",
                                                "text": "Which taxonomic authority is being followed, and what would a competing authority say?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "field-identification",
                                "name": "Field identification",
                                "description": "The characters that separate nail from what it is confused with.",
                                "findings": [
                                    {
                                        "id": "diagnostic-characters",
                                        "name": "Diagnostic characters and confusable kinds",
                                        "description": "Features that settle an identification, and those that only suggest it.",
                                        "questions": [
                                            {
                                                "id": "diagnostic-characters-q01",
                                                "text": "Which observable characters distinguish nail from its closest look-alikes, and at which life stage are they visible?",
                                                "kind": "boundary"
                                            },
                                            {
                                                "id": "diagnostic-characters-q02",
                                                "text": "What evidence is enough to record an identification as confirmed rather than provisional?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "life-cycle-and-condition",
                        "name": "Life stages, condition and behaviour",
                        "description": "What nail does over its life and how its state is judged.",
                        "rationale": "Stage and condition change what may be done - handled, treated, harvested, left alone - and both are observations with a time.",
                        "layers": [
                            {
                                "id": "stages-and-reproduction",
                                "name": "Stages and reproduction",
                                "description": "Development from origin to death, including forms that look like different animals.",
                                "findings": [
                                    {
                                        "id": "life-stages",
                                        "name": "Life stages and their marks",
                                        "description": "The stages worth recording and what tells them apart.",
                                        "questions": [
                                            {
                                                "id": "life-stages-q01",
                                                "text": "What stages does nail pass through, and what observable change marks each transition?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "life-stages-q02",
                                                "text": "Which stages are so unlike the adult that they are mistaken for another kind?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "health-and-condition",
                                "name": "Health and condition",
                                "description": "How condition is assessed and by whom.",
                                "findings": [
                                    {
                                        "id": "condition-assessment",
                                        "name": "Condition assessment",
                                        "description": "Signs of health, injury and stress, and who is competent to judge them.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "How is the condition of nail judged, on what scale, and by whom?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "condition-assessment-q02",
                                                "text": "What condition obliges an agent to act, and what act is permitted to whom?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "range-and-status",
                        "name": "Habitat, range and conservation status",
                        "description": "Where nail lives and how threatened it is.",
                        "rationale": "Range and status govern what is lawful, and both are assessments with an assessor and a year rather than facts of nature.",
                        "layers": [
                            {
                                "id": "habitat-and-range",
                                "name": "Habitat and range",
                                "description": "Native range, introductions and the habitat it needs.",
                                "findings": [
                                    {
                                        "id": "range-record",
                                        "name": "Range, introductions and habitat",
                                        "description": "What to record about where it is found and how it got there.",
                                        "questions": [
                                            {
                                                "id": "range-record-q01",
                                                "text": "What is the native range of nail, where has it been introduced, and what habitat does it require?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "range-record-q02",
                                                "text": "What distinguishes a native record from an introduced or vagrant one?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "protection-status",
                                "name": "Protection and legal status",
                                "description": "Conservation assessments and the rules that follow from them.",
                                "findings": [
                                    {
                                        "id": "status-and-rules",
                                        "name": "Conservation status and legal consequence",
                                        "description": "The assessment, its date, and what it forbids or requires where.",
                                        "questions": [
                                            {
                                                "id": "status-and-rules-q01",
                                                "text": "What conservation status does nail hold, under which assessment and year?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "status-and-rules-q02",
                                                "text": "What does that status forbid or require of an agent, and in which jurisdiction?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a nail 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 nail and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a nail, 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 nail, 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 nail 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 nail is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a nail, 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 nail, 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 nail 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
            }
        }
    }
}