{
    "model": {
        "rank": 6408,
        "code": "thing-q49718",
        "model_id": "vr.tr.crankshaft",
        "name": "crankshaft",
        "purpose": "Enable an AI agent to recognise a crankshaft, assess its condition and compatibility, and determine which installation, inspection, operation or repair actions its evidence supports.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q49718/",
        "tier": 2,
        "score": 60,
        "payload": {
            "layer": "wikidata",
            "aliases": [],
            "aliasCount": 0,
            "merged": 0,
            "knownIn": 60,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q49718",
                "url": "https://www.wikidata.org/wiki/Q49718",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T14:19:20Z",
                "providers": [
                    "Codex",
                    "Grok"
                ],
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "usd": 0.00331636,
                        "turns": 1,
                        "seconds": 44.8,
                        "error": null
                    },
                    "codex": {
                        "seconds": 84.1,
                        "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: 01a07c3b-9cd4-77d1-a612-57c8643729b3\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: crankshaft\nRegistry id: vr.tr.crankshaft\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA V"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q49718",
                "registryId": "vr.tr.crankshaft",
                "name": "crankshaft",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q49718/",
            "model": {
                "registry_id": "vr.tr.crankshaft",
                "name": "crankshaft",
                "purpose": "Enable an AI agent to recognise a crankshaft, assess its condition and compatibility, and determine which installation, inspection, operation or repair actions its evidence supports.",
                "definition": "A crankshaft is a rotating machine element that converts the reciprocating linear motion of pistons into rotary motion (or the reverse) through offset crank throws connected by crankpins, with main journals that run in bearings in the engine or machine frame.",
                "scope_statement": "This model owns the crankshaft as a physical component, including its main-axis supports, offset crankpins, webs, integral features, interfaces, condition and component-specific limits within a reciprocating mechanism.",
                "in_scope": [
                    "Main journals, offset crankpins, crank throws, webs and integral counterweights",
                    "Component identity, configuration and application compatibility",
                    "Journal geometry, alignment, surface condition and structural integrity",
                    "Integral lubrication passages and interfaces for bearings, connecting rods, seals and attached equipment",
                    "Evidence supporting installation, continued service, reconditioning or retirement"
                ],
                "out_of_scope": [
                    "Complete engine, compressor or pump performance and operating control",
                    "Connecting-rod, piston and cylinder condition beyond their crankshaft interfaces",
                    "Bearing-shell design and lubrication-system performance beyond crankshaft requirements",
                    "Flywheel, damper, pulley and coupling internals",
                    "Detailed machining equipment, inspection-instrument and workshop-process models"
                ],
                "distinguishing_features": [
                    "Identify a supported main rotation axis and at least one crankpin axis offset from it; an ordinary straight transmission shaft lacks this crank arrangement.",
                    "Establish that the offset journal interfaces with a connecting rod or equivalent link to couple rotation and reciprocation; a camshaft instead uses a cam profile to govern follower motion.",
                    "Trace the structural connection from crankpin through webs or equivalent members to the main-axis shaft portions; an eccentric sleeve alone does not establish a complete crankshaft.",
                    "Check the component boundary against drawings or assembly records: a crankshaft may be built from joined parts, so visible joints do not by themselves disqualify it.",
                    "Distinguish the shaft component from a separate crank arm, crank disc or eccentric attachment by locating its main-bearing support surfaces and assembly boundary."
                ],
                "characteristics": [
                    {
                        "name": "Component identity and revision",
                        "kind": "category",
                        "unit_or_values": "Manufacturer, part number, revision, serial or traceability marking; unknown where unverified",
                        "why_it_matters": "Similar-looking crankshafts can have different fit, balance and service requirements."
                    },
                    {
                        "name": "Construction",
                        "kind": "category",
                        "unit_or_values": "One-piece, built-up or other documented construction; material and treatment designation where verified",
                        "why_it_matters": "Construction affects inspection, alignment assessment and permissible repair."
                    },
                    {
                        "name": "Crank throw geometry",
                        "kind": "measurement",
                        "unit_or_values": "Crankpin count; offset from main axis in mm; axial positions in mm; relative angular positions in degrees",
                        "why_it_matters": "The arrangement determines the motion geometry and compatibility with the intended mechanism."
                    },
                    {
                        "name": "Journal dimensions and form",
                        "kind": "measurement",
                        "unit_or_values": "Main-journal and crankpin diameters and widths in mm; taper and out-of-round in µm or mm, with measurement locations",
                        "why_it_matters": "Bearing fit and reconditioning decisions depend on local geometry rather than a nominal diameter alone."
                    },
                    {
                        "name": "Axis alignment and runout",
                        "kind": "measurement",
                        "unit_or_values": "µm or mm at stated surfaces, with datum, support arrangement and measurement method",
                        "why_it_matters": "A runout value is interpretable only with its setup and applicable acceptance limit."
                    },
                    {
                        "name": "Journal and transition condition",
                        "kind": "state",
                        "unit_or_values": "Observed wear, scoring, corrosion, heat discoloration, crack indications or no relevant indications under a stated inspection",
                        "why_it_matters": "Surface and structural evidence constrain whether the crankshaft can remain in service."
                    },
                    {
                        "name": "Lubrication-path condition",
                        "kind": "state",
                        "unit_or_values": "Passage configuration documented, clear, obstructed, damaged, unverified or not applicable",
                        "why_it_matters": "Where internal oil paths exist, their condition affects oil delivery through the crankshaft."
                    },
                    {
                        "name": "Mating-component compatibility",
                        "kind": "relation",
                        "unit_or_values": "Links to approved bearings, connecting rods, housing, seals, flywheel, damper and drive components as applicable",
                        "why_it_matters": "Physical fit alone does not establish an approved or serviceable assembly."
                    },
                    {
                        "name": "Balance configuration",
                        "kind": "relation",
                        "unit_or_values": "Counterweight arrangement, required external balance components and applicable balance specification",
                        "why_it_matters": "Balance evidence must correspond to the intended rotating and reciprocating assembly."
                    },
                    {
                        "name": "Service and reconditioning status",
                        "kind": "state",
                        "unit_or_values": "Unassessed, accepted for stated application, restricted, awaiting approved repair or rejected; supporting authority and evidence",
                        "why_it_matters": "The agent needs a justified disposition that distinguishes missing evidence from demonstrated failure."
                    }
                ],
                "affordances": [
                    "Identify the crankshaft and compare its throw arrangement and interfaces with a proposed application.",
                    "Plan and record journal, runout, surface and structural inspections against applicable criteria.",
                    "Verify crankshaft lubrication passages and plugs where fitted.",
                    "Assess bearing-size selection, axial location and mating-component compatibility before installation.",
                    "Evaluate proposed grinding, polishing, straightening or built-up alignment work against documented permissions and limits.",
                    "Recommend installation, continued service, further inspection or retirement with explicit evidence and unresolved conditions."
                ]
            },
            "sources": [
                {
                    "id": "src-wikipedia-crankshaft",
                    "title": "Crankshaft",
                    "url": "https://en.wikipedia.org/wiki/Crankshaft",
                    "what_it_supports": "Definition, kinds, neighbours, history, and typical engine applications.",
                    "url_status": "live"
                }
            ],
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-crank-geometry",
                        "name": "Identity and crank geometry",
                        "description": "Establish which component this is and how its supported axis and offset journals form a crankshaft.",
                        "rationale": "Recognition and application matching require the actual crank arrangement and component boundary.",
                        "layers": [
                            {
                                "id": "component-identity",
                                "name": "Component identity",
                                "description": "Identify the crankshaft variant and distinguish integral features from separate assembly members.",
                                "findings": [
                                    {
                                        "id": "traceable-crankshaft-variant",
                                        "name": "Traceable crankshaft variant",
                                        "description": "Record markings and documentary evidence for identity, revision and one-piece or built-up construction without inferring them from appearance alone.",
                                        "questions": [
                                            {
                                                "text": "Which markings, drawings or manufacturer records identify this crankshaft and its revision?",
                                                "kind": "provenance",
                                                "id": "traceable-crankshaft-variant-q01"
                                            },
                                            {
                                                "text": "Which webs, counterweights, gears or end fittings belong to this component, and which are separately replaceable parts?",
                                                "kind": "boundary",
                                                "id": "traceable-crankshaft-variant-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "throw-arrangement",
                                "name": "Throw arrangement",
                                "description": "Describe the main axis, crankpin offsets and relative throw positions.",
                                "findings": [
                                    {
                                        "id": "main-axis-and-offset-journals",
                                        "name": "Main axis and offset journals",
                                        "description": "Record the journal layout that couples shaft rotation to connecting-link motion.",
                                        "questions": [
                                            {
                                                "text": "Which surfaces establish the main rotation axis, and which journals serve as offset crankpins?",
                                                "kind": "definition",
                                                "id": "main-axis-and-offset-journals-q01"
                                            },
                                            {
                                                "text": "What are the crankpin offsets, axial positions and relative angles, and how were they established?",
                                                "kind": "measurement",
                                                "id": "main-axis-and-offset-journals-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "bearing-and-drive-interfaces",
                        "name": "Bearing and drive interfaces",
                        "description": "Describe the surfaces and connections through which the crankshaft is supported, located and coupled to other parts.",
                        "rationale": "Correct crank geometry does not establish bearing fit, axial control or compatibility with attached equipment.",
                        "layers": [
                            {
                                "id": "journal-and-thrust-fit",
                                "name": "Journal and thrust fit",
                                "description": "Capture the geometry needed to assess main-bearing, connecting-rod-bearing and thrust interfaces.",
                                "findings": [
                                    {
                                        "id": "bearing-fit-evidence",
                                        "name": "Bearing fit evidence",
                                        "description": "Record journal size, form, transitions and thrust surfaces against the intended mating parts.",
                                        "questions": [
                                            {
                                                "text": "What are each journal's measured diameter, width, taper and out-of-round, including any documented undersize designation?",
                                                "kind": "measurement",
                                                "id": "bearing-fit-evidence-q01"
                                            },
                                            {
                                                "text": "Which bearing and thrust arrangements are approved, and what assembly measurements are still needed to establish clearance and end float?",
                                                "kind": "boundary",
                                                "id": "bearing-fit-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "shaft-end-connections",
                                "name": "Shaft-end connections",
                                "description": "Identify torque-transfer, timing-location and sealing interfaces where present.",
                                "findings": [
                                    {
                                        "id": "end-interface-compatibility",
                                        "name": "End-interface compatibility",
                                        "description": "Record flange, nose, keyway, spline, thread and seal-track features relevant to the actual variant.",
                                        "questions": [
                                            {
                                                "text": "Which end-interface dimensions, locating features and seal surfaces must match the intended attached components?",
                                                "kind": "measurement",
                                                "id": "end-interface-compatibility-q01"
                                            },
                                            {
                                                "text": "Which installation specifications govern orientation, fastening and permissible restoration of these interfaces?",
                                                "kind": "action",
                                                "id": "end-interface-compatibility-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "lubrication-and-working-surfaces",
                        "name": "Lubrication and working surfaces",
                        "description": "Assess journal surfaces and any internal oil routes serving crankshaft bearing interfaces.",
                        "rationale": "A dimensionally compatible crankshaft can still have damaged running surfaces or compromised oil paths.",
                        "layers": [
                            {
                                "id": "internal-oil-routing",
                                "name": "Internal oil routing",
                                "description": "Establish whether internal lubrication passages exist and assess their configuration and condition.",
                                "findings": [
                                    {
                                        "id": "oil-path-continuity",
                                        "name": "Oil-path continuity",
                                        "description": "Record passage routing, openings and plugs where fitted, together with evidence of cleanliness and integrity.",
                                        "questions": [
                                            {
                                                "text": "Does this design route lubricant through the crankshaft, and which inlets, outlets and plugs form each documented path?",
                                                "kind": "definition",
                                                "id": "oil-path-continuity-q01"
                                            },
                                            {
                                                "text": "What approved cleaning and verification actions establish passage condition and plug security after service or machining?",
                                                "kind": "action",
                                                "id": "oil-path-continuity-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "journal-surface-quality",
                                "name": "Journal surface quality",
                                "description": "Assess running surfaces, oil-hole edges and adjacent transitions.",
                                "findings": [
                                    {
                                        "id": "surface-serviceability",
                                        "name": "Surface serviceability",
                                        "description": "Record roughness and local damage with enough location detail to judge bearing-interface serviceability.",
                                        "questions": [
                                            {
                                                "text": "What surface-finish measurements and observations of scoring, pitting or other damage exist for each journal?",
                                                "kind": "measurement",
                                                "id": "surface-serviceability-q01"
                                            },
                                            {
                                                "text": "Which applicable criteria govern journal finish, oil-hole edge treatment and whether polishing or grinding is permitted?",
                                                "kind": "action",
                                                "id": "surface-serviceability-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "structural-and-dynamic-condition",
                        "name": "Structural and dynamic condition",
                        "description": "Assess crankshaft integrity, alignment and balance in the relevant assembly configuration.",
                        "rationale": "Local journal measurements alone cannot establish freedom from structural damage or suitability for the intended dynamic loading.",
                        "layers": [
                            {
                                "id": "integrity-and-alignment",
                                "name": "Integrity and alignment",
                                "description": "Capture evidence concerning cracks, distortion and joined-member movement.",
                                "findings": [
                                    {
                                        "id": "structural-inspection-evidence",
                                        "name": "Structural inspection evidence",
                                        "description": "Keep inspection indications and alignment results distinct from their acceptance decision.",
                                        "questions": [
                                            {
                                                "text": "Which inspection methods covered the journals, fillets, webs and joints as applicable, and what indications or coverage limitations were recorded?",
                                                "kind": "provenance",
                                                "id": "structural-inspection-evidence-q01"
                                            },
                                            {
                                                "text": "What runout or built-up alignment measurements were obtained, using which datums and supports, and against which limits?",
                                                "kind": "measurement",
                                                "id": "structural-inspection-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "balance-and-torsional-context",
                                "name": "Balance and torsional context",
                                "description": "Relate counterweights and attached rotating components to applicable balance and torsional requirements.",
                                "findings": [
                                    {
                                        "id": "validated-rotating-configuration",
                                        "name": "Validated rotating configuration",
                                        "description": "Associate balance evidence and operating restrictions with the exact configuration they cover.",
                                        "questions": [
                                            {
                                                "text": "Which counterweights, external balance components and representative reciprocating masses were assumed in the applicable balance specification or test?",
                                                "kind": "provenance",
                                                "id": "validated-rotating-configuration-q01"
                                            },
                                            {
                                                "text": "Which speed, load or torsional restrictions apply to this crankshaft configuration, and which depend on the surrounding machine and damper?",
                                                "kind": "boundary",
                                                "id": "validated-rotating-configuration-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "service-history-and-disposition",
                        "name": "Service history and disposition",
                        "description": "Connect manufacturing and service evidence to permissible reconditioning and a justified next action.",
                        "rationale": "Crankshaft treatments and prior repairs can constrain subsequent machining and service decisions even when current dimensions appear acceptable.",
                        "layers": [
                            {
                                "id": "material-treatment-and-history",
                                "name": "Material, treatment and history",
                                "description": "Establish evidence for material condition, manufacturing treatments and previous interventions.",
                                "findings": [
                                    {
                                        "id": "reconditioning-constraints",
                                        "name": "Reconditioning constraints",
                                        "description": "Record verified material and treatment information alongside prior grinding, straightening, joint adjustment or other repairs.",
                                        "questions": [
                                            {
                                                "text": "What records establish the material, hardening or surface treatment, and any treatment of journal fillets?",
                                                "kind": "provenance",
                                                "id": "reconditioning-constraints-q01"
                                            },
                                            {
                                                "text": "What previous repairs or damage events are documented, and how do applicable instructions constrain further material removal or alignment work?",
                                                "kind": "action",
                                                "id": "reconditioning-constraints-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "acceptance-and-next-action",
                                "name": "Acceptance and next action",
                                "description": "Determine a disposition for a stated application from inspection evidence and applicable instructions.",
                                "findings": [
                                    {
                                        "id": "evidence-backed-disposition",
                                        "name": "Evidence-backed disposition",
                                        "description": "Separate accepted, repairable, rejected and unresolved conditions, preserving the basis and scope of the decision.",
                                        "questions": [
                                            {
                                                "text": "Which authoritative acceptance criteria and completed inspections support the proposed disposition for this application?",
                                                "kind": "provenance",
                                                "id": "evidence-backed-disposition-q01"
                                            },
                                            {
                                                "text": "What must happen next - installation checks, further inspection, approved reconditioning or retirement - and what evidence is required before release?",
                                                "kind": "action",
                                                "id": "evidence-backed-disposition-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "evidence-and-external-alignment",
                        "name": "Evidence and external alignment",
                        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
                        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
                        "layers": [
                            {
                                "id": "reported-evidence",
                                "name": "Reported evidence",
                                "description": "Findings from the breadth pass, kept separate from the structural claims.",
                                "findings": [
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Inline / straight crankshaft (throws in one plane for inline engines)",
                                            "V-engine crankshaft (throws arranged at the V-angle, typically 60° or 90°)",
                                            "Boxer / opposed-piston crankshaft (throws 180° apart)",
                                            "Radial-engine crankshaft (master-and-articulating-rod arrangement, often single-throw or two-throw)",
                                            "Forged steel crankshaft",
                                            "Cast iron / nodular-iron crankshaft",
                                            "Billet / machined crankshaft",
                                            "Assembled / built-up crankshaft (pressed or bolted throws, common in large two-stroke diesels and some small engines)"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of crankshaft this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-identifiers",
                                        "name": "Identifiers and schemes",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "scheme": "Wikidata",
                                                "value_or_pattern": "Q5349",
                                                "note": "item 'crankshaft'"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of crankshaft this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-standards-and-regulation",
                                        "name": "Standards and regulation",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "ISO 6621 / related piston-engine component families (ISO) - dimensional and material practice around reciprocating engines (crankshafts themselves are more often specified in OEM and classification-society rules than in a single ISO product standard)",
                                            "IACS UR M53 / classification-society crankshaft fatigue rules (IACS, with implementations by DNV, ABS, Lloyd's Register, etc.) - marine diesel crankshaft scantlings and fatigue assessment",
                                            "SAE J1999 / SAE engine-component material and fatigue practice (SAE International) - automotive crankshaft material and testing context",
                                            "DIN 743 (shaft calculation) and related national shaft-design codes - used for general machine crankshafts outside automotive OEM specs"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of crankshaft this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Internal-combustion engine of cars, trucks, motorcycles, ships, locomotives, and aircraft, converting piston strokes into flywheel/output-shaft rotation",
                                            "Reciprocating compressors and pumps, converting rotary drive into piston motion",
                                            "Steam engines and some Stirling engines, same kinematic role",
                                            "Presses, punches, and mechanical shears that use a crank to produce a working stroke"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of crankshaft this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "quantity": "Main-journal diameter",
                                                "typical_range": "30-150 (automotive); 200-800 (large marine)",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "Stroke (twice crank throw radius)",
                                                "typical_range": "70-110 (passenger car); 200-350 (heavy truck); 1000-3500 (large two-stroke marine)",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "Number of throws / cylinders served",
                                                "typical_range": "1-16 (common production); up to ~20 in some large engines",
                                                "unit": "count"
                                            },
                                            {
                                                "quantity": "Mass",
                                                "typical_range": "10-40 (passenger car); 50-200 (truck); several tonnes (marine)",
                                                "unit": "kg"
                                            },
                                            {
                                                "quantity": "Tensile / yield strength of material",
                                                "typical_range": "700-1200 (forged steel); 500-800 (nodular iron)",
                                                "unit": "MPa"
                                            },
                                            {
                                                "quantity": "Fillet radius at journal-web junction",
                                                "typical_range": "1-6 (small engines, often rolled); larger and often undercut or ground on heavy shafts",
                                                "unit": "mm"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of crankshaft this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Fatigue fracture initiating at crankpin or main-journal fillets, oil holes, or web-to-journal transitions under cyclic bending and torsion",
                                            "Journal wear, scoring, or bearing wipe from oil starvation, contamination, or misalignment",
                                            "Twisting or bending from overload, hydrolock, or detonation, producing runout and subsequent bearing failure",
                                            "Fretting or loosening of press-fit counterweights or assembled-throw joints",
                                            "If the shaft fails in service: sudden loss of drive, thrown fragments, oil fire risk in engines, and in marine/industrial plants possible uncontrolled stop of a critical machine"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of crankshaft this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "English: crankshaft; German: Kurbelwelle; French: vilebrequin; Italian: albero a gomiti / albero motore; Japanese: クランクシャフト (kurankushafuto) or クランク軸",
                                            "Large two-stroke marine practice (assembled, fully built-up or semi-built shafts, classification-society approval) differs sharply from automotive one-piece forged or cast shafts",
                                            "US automotive aftermarket often classes shafts as cast, forged, or billet; European OEM literature more often specifies the steel grade and the manufacturing route (die-forged, cast GJS, etc.)"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of crankshaft this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "name": "Camshaft",
                                                "difference": "A camshaft times valve events via cams; a crankshaft takes piston force via connecting rods. Test: presence of crank throws and rod journals versus cam lobes."
                                            },
                                            {
                                                "name": "Crank (simple crank or crank arm)",
                                                "difference": "A simple crank is a single offset arm; a crankshaft is a shaft with one or more throws, usually with main journals at both ends. Test: multiple main bearings and/or multiple throws on one axis."
                                            },
                                            {
                                                "name": "Connecting rod",
                                                "difference": "The rod links piston to crankpin and articulates; it does not rotate continuously as the output member. Test: big-end bearing on a crankpin versus a rotating shaft with journals."
                                            },
                                            {
                                                "name": "Flywheel",
                                                "difference": "The flywheel stores rotational energy and is usually bolted to a crankshaft flange; it is not the converting element. Test: mass of revolution without throws versus a shaft with crankpins."
                                            },
                                            {
                                                "name": "Eccentric shaft",
                                                "difference": "An eccentric has a circular offset journal whose centre is displaced but still a full circle (Wankel, some pumps); a crank throw is a pin between webs. Test: full-diameter eccentric versus a pin of smaller diameter between cheeks."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of crankshaft this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does the registry intend crankshaft to include all built-up and single-throw forms, and where should it draw the boundary with crank axles and eccentric shafts?",
                "Which manufacturer or application-specific sources should govern journal tolerances, runout, surface finish and structural acceptance for each supported variant?",
                "How should the model represent permitted reconditioning when material, hardening depth, fillet treatment or previous machining history cannot be verified?",
                "Which balance and torsional requirements belong directly to a crankshaft variant, and which must remain decisions of the complete machine model?",
                "What minimum inspection coverage and traceability are required to move a crankshaft from unassessed to accepted for a stated application?"
            ],
            "statistics": {
                "bundles": 6,
                "layers": 11,
                "findings": 18,
                "questions": 28
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "device, machine or tool",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a crankshaft, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise a crankshaft, assess its condition and compatibility, and determine which installation, inspection, operation or repair actions its evidence supports.",
            "characteristics": {
                "substance": "material",
                "origin": "manufactured",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured"
            ],
            "distinguishingFeatures": [
                "Described in 60 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 crankshaft, 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": [],
            "standing": "Described in 60 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one crankshaft from another, and a crankshaft 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 crankshaft, 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 crankshaft, 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 crankshaft 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 crankshaft, 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 crankshaft, 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 crankshaft 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 crankshaft 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 crankshaft, 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 crankshaft, 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 crankshaft 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 crankshaft from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a crankshaft, 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 crankshaft, 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 crankshaft 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 crankshaft 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 crankshaft, 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 crankshaft, 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 crankshaft 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 crankshaft is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a crankshaft, 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 crankshaft, 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 crankshaft 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 crankshaft is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a crankshaft, 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 crankshaft, 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 crankshaft 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 crankshaft 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 crankshaft is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a crankshaft, 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 crankshaft, 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 crankshaft 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 crankshaft 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 crankshaft, 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 crankshaft, 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 crankshaft 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 crankshaft 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 crankshaft between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a crankshaft, 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 crankshaft, 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 crankshaft 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 crankshaft, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a crankshaft 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 crankshaft, 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 crankshaft, 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 crankshaft 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 crankshaft 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 crankshaft 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 crankshaft, 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 crankshaft 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 crankshaft 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 crankshaft 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 crankshaft 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 crankshaft 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 crankshaft, 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 crankshaft 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 crankshaft and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a crankshaft, 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 crankshaft, 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 crankshaft 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 crankshaft is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a crankshaft, 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 crankshaft, 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 crankshaft 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
            }
        }
    }
}