{
    "model": {
        "rank": 5320,
        "code": "thing-q29251",
        "model_id": "vr.tr.mcdonnell-douglas-f-15-eagle",
        "name": "McDonnell Douglas F-15 Eagle",
        "purpose": "Enable an AI agent to recognise the McDonnell Douglas F-15 Eagle aircraft family, interpret a documented aircraft configuration and condition, and identify the evidence and authority required before proposing an action.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q29251/",
        "tier": 2,
        "score": 68,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "F-15 Eagle single-seater",
                "F-15 Eagle two-seater",
                "F-15A/B Eagle",
                "F-15J/DJ",
                "F-15N Sea Eagle",
                "F-15 Eagle prototype",
                "F-15 Eagle experimental aircraft",
                "Mitsubishi F-15J",
                "F-15A Eagle",
                "F-15C/D Eagle",
                "F-15B Eagle"
            ],
            "aliasCount": 11,
            "merged": 11,
            "knownIn": 68,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q29251",
                "url": "https://www.wikidata.org/wiki/Q29251",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-09T22:07:45Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 22.6,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\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: 01a08835-64f2-7a53-a6ae-baff6280a911\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: McDonnell Douglas F-15 Eagle\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Ba",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 69.8,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\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: 01a08835-64fd-7811-8c80-ea1963c8aa43\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: McDonnell Douglas F-15 Eagle\nRegistry id: vr.tr.mcdonnell-douglas-f-15-eagle\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q29251",
                "registryId": "vr.tr.mcdonnell-douglas-f-15-eagle",
                "name": "McDonnell Douglas F-15 Eagle",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q29251/",
            "model": {
                "registry_id": "vr.tr.mcdonnell-douglas-f-15-eagle",
                "name": "McDonnell Douglas F-15 Eagle",
                "purpose": "Enable an AI agent to recognise the McDonnell Douglas F-15 Eagle aircraft family, interpret a documented aircraft configuration and condition, and identify the evidence and authority required before proposing an action.",
                "definition": "The McDonnell Douglas F-15 Eagle is a United States-designed family of twin-engine, twin-tail, supersonic tactical fighter aircraft developed primarily for all-weather air superiority, encompassing multiple variants rather than a single aircraft.",
                "scope_statement": "This model owns the identifying design, configuration distinctions, operating constraints and condition evidence of the F-15 Eagle family registered as vr.tr.mcdonnell-douglas-f-15-eagle in PHY / PHY.OBJ; it distinguishes the family from named variants and individual airframes, while leaving the inclusion of separately named derivatives explicit.",
                "in_scope": [
                    "F-15 family identity, design lineage and boundaries between Eagle variants and separately named derivatives",
                    "Variant-dependent airframe, seating, propulsion and fuel configuration",
                    "Installed flight controls, sensors, avionics and external-store compatibility",
                    "Configuration-specific flight limitations, ground states and safety controls",
                    "Airframe service history, maintenance evidence and restrictions affecting readiness"
                ],
                "out_of_scope": [
                    "The complete engineering model of fighter aircraft in general",
                    "Corporate histories of McDonnell Douglas and Boeing",
                    "Independent specifications of engines, missiles, radar sets and other fitted products",
                    "Combat tactics, targeting decisions and weapon-employment procedures",
                    "Squadron organisation, national defence policy and procurement programmes",
                    "The authoritative maintenance record of any individual aircraft"
                ],
                "distinguishing_features": [
                    "Require an authoritative F-15 type or variant designation; the word Eagle or a visual resemblance alone does not establish membership.",
                    "Check the characteristic combination of two engines, lateral air intakes, swept wings and twin vertical tails against documentation; these features support identification but are not individually unique.",
                    "Distinguish single-seat and two-seat configurations through the documented variant and cockpit arrangement; two seats alone do not identify an F-15E.",
                    "Separate the original air-superiority Eagle configurations from Strike Eagle and later derivatives using the official designation, structural configuration and documented mission equipment.",
                    "Treat a serial number or tail marking as evidence about an individual airframe, while the registry entry denotes an aircraft family rather than that physical unit."
                ],
                "characteristics": [
                    {
                        "name": "Documented variant designation",
                        "kind": "category",
                        "unit_or_values": "Official designation, block and operator-specific designation, each with source",
                        "why_it_matters": "Determines which configuration references, limitations and derivative boundaries apply."
                    },
                    {
                        "name": "Family and derivative relationship",
                        "kind": "relation",
                        "unit_or_values": "Variant of; derived from; separately registered as; boundary unresolved",
                        "why_it_matters": "Prevents duplication of a separately modelled derivative and inappropriate inheritance of its capabilities."
                    },
                    {
                        "name": "Crew-station arrangement",
                        "kind": "category",
                        "unit_or_values": "Single-seat or two-seat, with documented station functions",
                        "why_it_matters": "Helps distinguish configurations without assuming every two-seat Eagle has the same role."
                    },
                    {
                        "name": "Installed propulsion configuration",
                        "kind": "relation",
                        "unit_or_values": "Two installed engines; exact engine model and modification status recorded separately",
                        "why_it_matters": "The family name does not establish an aircraft's engine installation or its applicable maintenance and performance references."
                    },
                    {
                        "name": "Airframe dimensions",
                        "kind": "measurement",
                        "unit_or_values": "Length, wingspan and height in m, tied to variant and measurement configuration",
                        "why_it_matters": "Supports identification and hangar or ground-clearance assessment without mixing specifications from different derivatives."
                    },
                    {
                        "name": "Mass and loading condition",
                        "kind": "measurement",
                        "unit_or_values": "kg and centre-of-gravity position in the units and datum of the applicable loading reference",
                        "why_it_matters": "Fuel, stores and equipment affect whether a proposed aircraft configuration falls within documented limits."
                    },
                    {
                        "name": "Fuel-system configuration",
                        "kind": "category",
                        "unit_or_values": "Internal fuel configuration and documented external or conformal tank installation",
                        "why_it_matters": "Fuel capacity and configuration effects must be attributed to the actual variant and installation."
                    },
                    {
                        "name": "Sensor and avionics baseline",
                        "kind": "relation",
                        "unit_or_values": "Installed radar, navigation, communications and defensive systems with hardware and software baseline",
                        "why_it_matters": "Aircraft sharing an F-15 designation can have materially different equipment and supported functions."
                    },
                    {
                        "name": "External-store approval status",
                        "kind": "state",
                        "unit_or_values": "Approved for specified configuration; restricted; unsupported; unknown",
                        "why_it_matters": "A physically available attachment point does not establish approval for a particular store or loading combination."
                    },
                    {
                        "name": "Structural usage",
                        "kind": "measurement",
                        "unit_or_values": "Flight hours, landings and applicable fatigue or life-consumption measures defined by the responsible authority",
                        "why_it_matters": "Elapsed age alone cannot establish structural serviceability or remaining authorised life."
                    },
                    {
                        "name": "Release and restriction status",
                        "kind": "state",
                        "unit_or_values": "Released for a specified activity; restricted; grounded; under maintenance; unknown",
                        "why_it_matters": "Connects a proposed action to current maintenance evidence and the responsible operator's authorisation."
                    }
                ],
                "affordances": [
                    "Identify whether a documented aircraft belongs to this F-15 family entry or requires a derivative-model reference.",
                    "Compare two F-15 configurations and explain which documented differences affect their supported roles or limitations.",
                    "Find the manuals, configuration records and authority decisions applicable to a specified airframe.",
                    "Flag missing or contradictory evidence before judging an aircraft ready for an explicitly named activity.",
                    "Check whether proposed ground handling, servicing or configuration changes require additional clearance or qualified personnel.",
                    "Summarise recorded defects, structural usage and restrictions without independently issuing a release to service."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "eagle-identity-and-lineage",
                        "name": "Eagle identity and lineage",
                        "description": "Establishes what the F-15 Eagle name denotes and how variants, derivatives and individual airframes relate to it.",
                        "rationale": "The F-15 name spans configurations whose capabilities cannot safely be inferred from family membership alone.",
                        "layers": [
                            {
                                "id": "family-boundary",
                                "name": "Family boundary",
                                "description": "Defines inclusion in this registry entry and references neighbouring derivative models.",
                                "findings": [
                                    {
                                        "id": "designation-and-derivative-membership",
                                        "name": "Designation and derivative membership",
                                        "description": "Record the evidence for treating a designation as an included variant or a linked derivative, particularly for Strike Eagle and later F-15 developments.",
                                        "questions": [
                                            {
                                                "text": "Which authoritative designations are included under this registry entry's use of F-15 Eagle?",
                                                "kind": "definition",
                                                "id": "designation-and-derivative-membership-q01"
                                            },
                                            {
                                                "text": "Are the F-15E Strike Eagle, F-15EX and export derivatives covered here or by existing registry or world-model entries?",
                                                "kind": "boundary",
                                                "id": "designation-and-derivative-membership-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "airframe-identification",
                                "name": "Airframe identification",
                                "description": "Connects an observed aircraft to documented designation and configuration evidence.",
                                "findings": [
                                    {
                                        "id": "identity-beyond-appearance",
                                        "name": "Identity beyond appearance",
                                        "description": "Use airframe records to interpret cockpit arrangement, markings and visible modifications without confusing an individual aircraft with the family.",
                                        "questions": [
                                            {
                                                "text": "Which manufacturer or operator record connects the serial number to an F-15 variant and production configuration?",
                                                "kind": "provenance",
                                                "id": "identity-beyond-appearance-q01"
                                            },
                                            {
                                                "text": "Do the observed seating arrangement and external features agree with the aircraft's recorded modifications?",
                                                "kind": "boundary",
                                                "id": "identity-beyond-appearance-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "airframe-propulsion-and-loading",
                        "name": "Airframe, propulsion and loading",
                        "description": "Describes the physical configuration that determines the applicability of F-15 performance and loading references.",
                        "rationale": "Engine installations, fuel arrangements and external loads can differ across Eagle configurations.",
                        "layers": [
                            {
                                "id": "installed-power-and-fuel",
                                "name": "Installed power and fuel",
                                "description": "Identifies the two-engine installation and the documented fuel-system configuration.",
                                "findings": [
                                    {
                                        "id": "engine-and-tank-baseline",
                                        "name": "Engine and tank baseline",
                                        "description": "Record exact installed engine models and tank arrangements instead of assigning one propulsion or fuel specification to every F-15.",
                                        "questions": [
                                            {
                                                "text": "Which engine models and modification states are installed, and which configuration record confirms their applicability?",
                                                "kind": "provenance",
                                                "id": "engine-and-tank-baseline-q01"
                                            },
                                            {
                                                "text": "What usable fuel quantity is documented for the installed internal, external and any conformal tank arrangement?",
                                                "kind": "measurement",
                                                "id": "engine-and-tank-baseline-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "geometry-and-load-envelope",
                                "name": "Geometry and load envelope",
                                "description": "Relates aircraft dimensions and loading to a specified Eagle configuration.",
                                "findings": [
                                    {
                                        "id": "configuration-specific-physical-limits",
                                        "name": "Configuration-specific physical limits",
                                        "description": "Tie dimensions, mass and balance limits to the relevant variant, equipment fit and approved reference.",
                                        "questions": [
                                            {
                                                "text": "What dimensions, mass limits and centre-of-gravity envelope apply to this variant and loading configuration?",
                                                "kind": "measurement",
                                                "id": "configuration-specific-physical-limits-q01"
                                            },
                                            {
                                                "text": "Which approved loading reference governs the proposed combination of fuel, tanks and external stores?",
                                                "kind": "action",
                                                "id": "configuration-specific-physical-limits-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "cockpit-systems-and-integration",
                        "name": "Cockpit systems and integration",
                        "description": "Captures the installed controls, avionics and equipment interfaces of a particular Eagle baseline.",
                        "rationale": "Cockpit layout and equipment modernisation can change supported functions without changing the family name.",
                        "layers": [
                            {
                                "id": "crew-and-control-baseline",
                                "name": "Crew and control baseline",
                                "description": "Records crew-station functions and the installed flight-control and cockpit configuration.",
                                "findings": [
                                    {
                                        "id": "station-functions-and-control-authority",
                                        "name": "Station functions and control authority",
                                        "description": "Describe the documented functions of each occupied station and the relevant control-system baseline.",
                                        "questions": [
                                            {
                                                "text": "What functions and flight-control access are assigned to each seat in this F-15 variant?",
                                                "kind": "definition",
                                                "id": "station-functions-and-control-authority-q01"
                                            },
                                            {
                                                "text": "Which cockpit and flight-control modifications determine the applicable operating documentation?",
                                                "kind": "provenance",
                                                "id": "station-functions-and-control-authority-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "avionics-and-store-interfaces",
                                "name": "Avionics and store interfaces",
                                "description": "Connects installed sensors and software to documented equipment compatibility.",
                                "findings": [
                                    {
                                        "id": "installed-versus-approved-capability",
                                        "name": "Installed versus approved capability",
                                        "description": "Distinguish equipment physically installed from functions and store combinations approved for that hardware and software baseline.",
                                        "questions": [
                                            {
                                                "text": "Which records identify the installed radar, defensive systems and operational software baseline?",
                                                "kind": "provenance",
                                                "id": "installed-versus-approved-capability-q01"
                                            },
                                            {
                                                "text": "What configuration-specific approval establishes compatibility for a proposed external store or equipment installation?",
                                                "kind": "action",
                                                "id": "installed-versus-approved-capability-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "operating-states-and-authority",
                        "name": "Operating states and authority",
                        "description": "Relates observed aircraft state to applicable limitations and authorised activities.",
                        "rationale": "An Eagle's identity or advertised performance does not establish permission to fly, move or service an individual aircraft.",
                        "layers": [
                            {
                                "id": "flight-limitations",
                                "name": "Flight limitations",
                                "description": "Identifies the approved operating envelope and restrictions for the actual configuration.",
                                "findings": [
                                    {
                                        "id": "applicable-envelope-and-restrictions",
                                        "name": "Applicable envelope and restrictions",
                                        "description": "Require a configuration-matched reference for speed, altitude, loading and other operating limits.",
                                        "questions": [
                                            {
                                                "text": "Which flight-manual revision and supplements apply to this variant, engine fit and external configuration?",
                                                "kind": "provenance",
                                                "id": "applicable-envelope-and-restrictions-q01"
                                            },
                                            {
                                                "text": "Which recorded defects or temporary restrictions further limit the aircraft's approved operating envelope?",
                                                "kind": "boundary",
                                                "id": "applicable-envelope-and-restrictions-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "ground-and-servicing-states",
                                "name": "Ground and servicing states",
                                "description": "Records conditions relevant to moving, accessing or servicing an F-15 on the ground.",
                                "findings": [
                                    {
                                        "id": "ground-hazard-and-clearance-evidence",
                                        "name": "Ground hazard and clearance evidence",
                                        "description": "Identify documented safe-state evidence for engines, ejection systems, installed stores and powered systems before an activity is proposed.",
                                        "questions": [
                                            {
                                                "text": "What recorded aircraft states and clearances are required for the proposed towing, access or servicing activity?",
                                                "kind": "action",
                                                "id": "ground-hazard-and-clearance-evidence-q01"
                                            },
                                            {
                                                "text": "Which operator-approved instructions define the relevant intake, exhaust, ejection-system and installed-store precautions?",
                                                "kind": "provenance",
                                                "id": "ground-hazard-and-clearance-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "service-life-and-maintenance-evidence",
                        "name": "Service life and maintenance evidence",
                        "description": "Connects structural usage, defects and maintenance records to an explicitly bounded readiness judgement.",
                        "rationale": "F-15 airframes can differ substantially in accumulated usage, repairs and modernisation history.",
                        "layers": [
                            {
                                "id": "structural-condition",
                                "name": "Structural condition",
                                "description": "Tracks applicable life measures and inspection evidence for the airframe.",
                                "findings": [
                                    {
                                        "id": "usage-and-inspection-applicability",
                                        "name": "Usage and inspection applicability",
                                        "description": "Interpret hours, landings, fatigue measures and repair history using the maintenance programme applicable to the aircraft.",
                                        "questions": [
                                            {
                                                "text": "Which usage measures and component life limits does the applicable F-15 maintenance programme require?",
                                                "kind": "measurement",
                                                "id": "usage-and-inspection-applicability-q01"
                                            },
                                            {
                                                "text": "Which structural inspections, repairs or life-extension actions are documented for this airframe?",
                                                "kind": "provenance",
                                                "id": "usage-and-inspection-applicability-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "maintenance-and-release",
                                "name": "Maintenance and release",
                                "description": "Establishes which maintenance evidence supports a specified activity and who may authorise it.",
                                "findings": [
                                    {
                                        "id": "activity-specific-serviceability",
                                        "name": "Activity-specific serviceability",
                                        "description": "Keep maintenance completion, unresolved defects, approved consumables and release authority explicit rather than reducing readiness to one unsupported label.",
                                        "questions": [
                                            {
                                                "text": "Which outstanding defects, overdue tasks or servicing discrepancies affect the requested activity?",
                                                "kind": "action",
                                                "id": "activity-specific-serviceability-q01"
                                            },
                                            {
                                                "text": "Which authority and signed record establish release for that activity under the operator's applicable airworthiness system?",
                                                "kind": "provenance",
                                                "id": "activity-specific-serviceability-q02"
                                            },
                                            {
                                                "text": "Which approved specifications govern fuels, lubricants and other consumables for this engine and airframe configuration?",
                                                "kind": "definition",
                                                "id": "activity-specific-serviceability-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "evidence-and-external-alignment",
                        "name": "Evidence and external alignment",
                        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
                        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
                        "layers": [
                            {
                                "id": "reported-evidence",
                                "name": "Reported evidence",
                                "description": "Findings from the breadth pass, kept separate from the structural claims.",
                                "findings": [
                                    {
                                        "id": "evidence-confidence-notes",
                                        "name": "Check these first",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "This is recalled knowledge, not source-verified research; no documents or standards were consulted.",
                                            "The scope here is the classic air-superiority Eagle family; broader uses of F-15 may also include Strike Eagle and later derivatives.",
                                            "Performance, weights, engine models, equipment, and service status require verification by variant and date; the dimensions given are approximate."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of McDonnell Douglas F-15 Eagle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "F-15A: initial single-seat fighter",
                                            "F-15B: initial two-seat training variant",
                                            "F-15C: improved single-seat fighter",
                                            "F-15D: two-seat counterpart to the F-15C",
                                            "F-15J: Japanese single-seat variant",
                                            "F-15DJ: Japanese two-seat training variant"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of McDonnell Douglas F-15 Eagle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-identifiers",
                                        "name": "Identifiers and schemes",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "scheme": "United States military Mission Design Series designation",
                                                "value_or_pattern": "F-15A, F-15B, F-15C, F-15D",
                                                "note": "F denotes fighter; the number identifies the design and the suffix identifies the series. These designate variants, not individual airframes."
                                            },
                                            {
                                                "scheme": "United States Air Force aircraft serial number",
                                                "value_or_pattern": "Fiscal-year prefix followed by an aircraft sequence number",
                                                "note": "Identifies an individual USAF airframe; foreign operators use their own serial systems."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of McDonnell Douglas F-15 Eagle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Air superiority and defensive counter-air missions",
                                            "Interception and identification of approaching aircraft",
                                            "Escort of other military aircraft",
                                            "Combat air patrol",
                                            "Pilot conversion and continuation training in two-seat variants"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of McDonnell Douglas F-15 Eagle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "quantity": "Overall length of the classic F-15 air-superiority variants",
                                                "typical_range": "Approximately 19.4",
                                                "unit": "m"
                                            },
                                            {
                                                "quantity": "Wingspan of the classic F-15 air-superiority variants",
                                                "typical_range": "Approximately 13.1",
                                                "unit": "m"
                                            },
                                            {
                                                "quantity": "Overall height of the classic F-15 air-superiority variants",
                                                "typical_range": "Approximately 5.6",
                                                "unit": "m"
                                            },
                                            {
                                                "quantity": "Published maximum speed at altitude under suitable conditions",
                                                "typical_range": "Approximately 2.5",
                                                "unit": "Mach"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of McDonnell Douglas F-15 Eagle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Engine foreign-object damage, compressor stalls, or engine failure",
                                            "Structural fatigue and corrosion requiring inspection and life management",
                                            "Hydraulic or flight-control failures that can compromise controllability",
                                            "Departure from controlled flight under adverse maneuvering conditions",
                                            "Hazards from jet intake suction, exhaust blast, fuel fires, live weapons, and ejection-seat pyrotechnics"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of McDonnell Douglas F-15 Eagle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Japanese F-15J and F-15DJ aircraft include substantial licensed production by Mitsubishi Heavy Industries.",
                                            "Export aircraft can differ in avionics, electronic warfare equipment, weapons integration, and upgrade history.",
                                            "Military operators apply national airworthiness and operating requirements; civil transport certification is not the defining approval framework."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of McDonnell Douglas F-15 Eagle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "name": "McDonnell Douglas F-15E Strike Eagle",
                                                "difference": "A closely related two-seat strike derivative designed for substantial air-to-ground capability while retaining air-to-air capability; its specifications should not be substituted for those of the classic Eagle."
                                            },
                                            {
                                                "name": "Boeing F-15EX Eagle II",
                                                "difference": "A later, extensively updated derivative with different systems and capabilities, requiring variant-specific treatment."
                                            },
                                            {
                                                "name": "General Dynamics F-16 Fighting Falcon",
                                                "difference": "A separate fighter design with one engine and one vertical tail, rather than the F-15's two engines and twin tails."
                                            },
                                            {
                                                "name": "Individual F-15 airframe",
                                                "difference": "A physical aircraft has its own serial number, configuration, maintenance history, and service life; this entry describes the aircraft family."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of McDonnell Douglas F-15 Eagle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does this registry entry include the F-15E Strike Eagle, F-15EX and export derivatives, and do existing world models already own any of those concepts?",
                "Which authoritative variant references can establish dimensions, mass, fuel capacity and operating limits without mixing configurations?",
                "Which operator-issued airworthiness requirements, technical orders and release rules apply to each included configuration?",
                "Which documented F-15 failure modes and inspection requirements merit explicit representation, and how does their applicability vary by variant or modification?",
                "Which configuration and serviceability evidence is publicly available, and which judgements must remain unresolved without operator-controlled records?"
            ],
            "statistics": {
                "bundles": 6,
                "layers": 11,
                "findings": 18,
                "questions": 29
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "unclassified",
            "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 McDonnell Douglas F-15 Eagle, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise the McDonnell Douglas F-15 Eagle aircraft family, interpret a documented aircraft configuration and condition, and identify the evidence and authority required before proposing an action.",
            "characteristics": {
                "substance": "material",
                "origin": "manufactured",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: F-15 Eagle single-seater, F-15 Eagle two-seater, F-15A/B Eagle, F-15J/DJ, F-15N Sea Eagle, F-15 Eagle prototype, F-15 Eagle experimental aircraft, Mitsubishi F-15J, F-15A Eagle, F-15C/D Eagle, F-15B Eagle.",
                "11 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 68 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 McDonnell Douglas F-15 Eagle, 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 and material. The registry holds no appearance data, so what a McDonnell Douglas F-15 Eagle looks like has to come from research."
            ],
            "relatedModels": [
                {
                    "relation": "covers",
                    "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.",
                    "targets": [
                        "F-15 Eagle single-seater",
                        "F-15 Eagle two-seater",
                        "F-15A/B Eagle",
                        "F-15J/DJ",
                        "F-15N Sea Eagle",
                        "F-15 Eagle prototype",
                        "F-15 Eagle experimental aircraft",
                        "Mitsubishi F-15J",
                        "F-15A Eagle",
                        "F-15C/D Eagle",
                        "F-15B Eagle"
                    ]
                }
            ],
            "standing": "Described in 68 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 11 finer distinctions are held inside this entry as names rather than as separate models.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one McDonnell Douglas F-15 Eagle from another, and a McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "use-and-operation",
                        "name": "Use and operation",
                        "description": "What can be done with a McDonnell Douglas F-15 Eagle and what it takes to do it.",
                        "rationale": "An agent that can recognise a thing but not act on it has only half a model.",
                        "layers": [
                            {
                                "id": "intended-use",
                                "name": "Intended use and function",
                                "description": "What a McDonnell Douglas F-15 Eagle is for, and what it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-and-purpose",
                                        "name": "Function, purpose and misuse",
                                        "description": "The function a McDonnell Douglas F-15 Eagle performs and the uses that fall outside it.",
                                        "questions": [
                                            {
                                                "id": "function-and-purpose-q01",
                                                "text": "What identifies and describes the use of a McDonnell Douglas F-15 Eagle, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q02",
                                                "text": "Who or what asserted this about the use of a McDonnell Douglas F-15 Eagle, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q03",
                                                "text": "What may an agent decide or do once the use of a McDonnell Douglas F-15 Eagle is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "handling-and-procedure",
                                "name": "Handling and procedure",
                                "description": "The steps, skills and tools involved in using a McDonnell Douglas F-15 Eagle.",
                                "findings": [
                                    {
                                        "id": "procedures-and-skills",
                                        "name": "Procedures, skills and required tools",
                                        "description": "What an agent needs before it can act on a McDonnell Douglas F-15 Eagle at all.",
                                        "questions": [
                                            {
                                                "id": "procedures-and-skills-q01",
                                                "text": "What identifies and describes handling a McDonnell Douglas F-15 Eagle, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q02",
                                                "text": "Who or what asserted this about handling a McDonnell Douglas F-15 Eagle, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q03",
                                                "text": "What may an agent decide or do once handling a McDonnell Douglas F-15 Eagle is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle 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 McDonnell Douglas F-15 Eagle is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle, 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 McDonnell Douglas F-15 Eagle is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 6,
                "layers": 13,
                "findings": 15,
                "questions": 45
            }
        }
    }
}