{
    "model": {
        "rank": 5704,
        "code": "thing-q140028",
        "model_id": "vr.tr.free-fall",
        "name": "free fall",
        "purpose": "Enable an AI agent to recognise a free-fall episode, assess the validity and consequences of treating its motion as gravity-driven, and decide which predictions or interventions are justified.",
        "family": "Thing Registry",
        "category": "Activities and processes",
        "status": "research-draft",
        "kind": "thing",
        "plane": "ACT",
        "domain": "ACT.ACT",
        "industry": "",
        "version": "",
        "url": "/models/thing/q140028/",
        "tier": 2,
        "score": 65,
        "payload": {
            "layer": "wikidata",
            "aliases": [],
            "aliasCount": 0,
            "merged": 0,
            "knownIn": 65,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q140028",
                "url": "https://www.wikidata.org/wiki/Q140028",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T09:04:18Z",
                "providers": [
                    "Codex"
                ],
                "missingProviders": [
                    "Grok"
                ],
                "pass": 2,
                "cost": {
                    "grok": {
                        "usd": null,
                        "turns": null,
                        "seconds": 5.5,
                        "error": "Error: Internal error: {\n  \"message\": \"API error (status 402 Payment Required): Grok Build usage balance exhausted\",\n  \"http_status\": 402\n}",
                        "retried": true
                    },
                    "codex": {
                        "seconds": 83.4,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07b1b-3312-7490-9df1-d34ad0b0b706\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: free fall\nRegistry id: vr.tr.free-fall\nPlane / domain: ACT / ACT.ACT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA Ver"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q140028",
                "registryId": "vr.tr.free-fall",
                "name": "free fall",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "ACT.ACT"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q140028/",
            "model": {
                "registry_id": "vr.tr.free-fall",
                "name": "free fall",
                "purpose": "Enable an AI agent to recognise a free-fall episode, assess the validity and consequences of treating its motion as gravity-driven, and decide which predictions or interventions are justified.",
                "definition": "",
                "scope_statement": "This model owns a body's bounded episode of motion governed by gravity, including the evidence, reference frame, approximation limits, trajectory state and transitions needed to distinguish strict free fall from practical uses of the term.",
                "in_scope": [
                    "The falling body or selected centre of mass and the time interval being assessed.",
                    "Evidence that support, thrust, drag and other non-gravitational forces are absent or negligible under an explicit criterion.",
                    "Position, velocity and acceleration relative to a declared reference frame and gravitational model.",
                    "Release, continued free motion and termination through contact, capture or applied force.",
                    "Prediction limits and possible encounters along the free-fall trajectory."
                ],
                "out_of_scope": [
                    "The complete flight operation of an aircraft, spacecraft or parachutist.",
                    "Detailed aerodynamic flow, parachute construction and propulsion-system design.",
                    "Collision deformation, injury assessment and post-impact damage.",
                    "The internal evolution of the body producing the gravitational field.",
                    "General structural failure or support-system reliability before release."
                ],
                "distinguishing_features": [
                    "Downward motion alone does not establish free fall: a supported descent or drag-balanced terminal descent has consequential non-gravitational forces.",
                    "Upward and sideways motion can be free fall when gravity governs the motion; the direction of velocity is not the defining test.",
                    "Orbital motion can qualify as free fall even when the body never reaches a surface.",
                    "A low apparent-weight or accelerometer reading supports a free-fall interpretation but requires sensor validation and gravitational context; it is not equivalent to zero coordinate acceleration.",
                    "A practical label such as 'skydiving freefall' must be distinguished from strict gravitational free fall when air resistance materially affects motion."
                ],
                "characteristics": [
                    {
                        "name": "Tracked body and representation",
                        "kind": "relation",
                        "unit_or_values": "Body identifier; centre of mass, selected point or test-particle approximation",
                        "why_it_matters": "Specifies whose motion qualifies and prevents local rotation or deformation from being mistaken for whole-body acceleration."
                    },
                    {
                        "name": "Episode phase",
                        "kind": "state",
                        "unit_or_values": "Candidate; active; ended; indeterminate",
                        "why_it_matters": "Separates a predicted release from an observed episode and records whether its defining conditions still hold."
                    },
                    {
                        "name": "Free-fall interpretation",
                        "kind": "category",
                        "unit_or_values": "Strict gravitational free fall; gravity-dominant approximation; domain usage with material drag; unresolved",
                        "why_it_matters": "Prevents a familiar label from silently authorising an unsuitable motion model."
                    },
                    {
                        "name": "Reference frame and time basis",
                        "kind": "relation",
                        "unit_or_values": "Named coordinate frame, origin, axes and clock convention",
                        "why_it_matters": "Makes velocity, acceleration and event timing interpretable and comparable."
                    },
                    {
                        "name": "Position and velocity",
                        "kind": "measurement",
                        "unit_or_values": "Position vector in m; velocity vector in m/s; epoch and uncertainty",
                        "why_it_matters": "Provides the initial and current conditions needed to propagate motion."
                    },
                    {
                        "name": "Gravitational description",
                        "kind": "category",
                        "unit_or_values": "Uniform local field; spatially varying Newtonian field; relativistic description; unresolved",
                        "why_it_matters": "Determines which predictions are valid over the episode's spatial and temporal extent."
                    },
                    {
                        "name": "Non-gravitational acceleration estimate",
                        "kind": "measurement",
                        "unit_or_values": "Vector or upper bound in m/s², with contributing forces and uncertainty",
                        "why_it_matters": "Tests whether drag, support, thrust or other interactions invalidate the selected free-fall interpretation."
                    },
                    {
                        "name": "Approximation acceptance criterion",
                        "kind": "measurement",
                        "unit_or_values": "Maximum trajectory error in m or acceleration contribution in m/s² over a stated duration in s",
                        "why_it_matters": "Makes 'negligible' meaningful for the intended decision."
                    },
                    {
                        "name": "Episode boundaries",
                        "kind": "measurement",
                        "unit_or_values": "Start and end times in s or timestamps, with uncertainty and triggering events",
                        "why_it_matters": "Bounds the interval over which free-fall claims and predictions apply."
                    },
                    {
                        "name": "Predicted encounter",
                        "kind": "relation",
                        "unit_or_values": "Surface or object, encounter time, relative velocity and uncertainty; or no encounter within the prediction horizon",
                        "why_it_matters": "Connects motion assessment to monitoring, interception or termination decisions."
                    }
                ],
                "affordances": [
                    "Classify a candidate episode using force evidence and an explicit interpretation of free fall.",
                    "Estimate missing trajectory state from observations while retaining uncertainty.",
                    "Propagate the trajectory within a declared gravitational model and prediction horizon.",
                    "Detect when drag, thrust, contact or model error requires reclassification.",
                    "Compare possible interception, braking or capture actions and identify when they would end free fall.",
                    "Request the next observation needed to distinguish gravitational motion from a competing explanation."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "free-fall-qualification",
                        "name": "Free-fall qualification",
                        "description": "Establishes what is falling and whether the episode meets the intended meaning of free fall.",
                        "rationale": "A falling appearance or domain label cannot establish the governing physical conditions.",
                        "layers": [
                            {
                                "id": "body-and-episode",
                                "name": "Body and episode",
                                "description": "Identifies the moving system and the interval to which the classification applies.",
                                "findings": [
                                    {
                                        "id": "tracked-falling-system",
                                        "name": "Tracked falling system",
                                        "description": "Records the selected body or representative point and separates its motion from rotation, deformation and neighbouring bodies.",
                                        "questions": [
                                            {
                                                "text": "Which body, centre of mass or selected point is being assessed as freely falling?",
                                                "kind": "definition",
                                                "id": "tracked-falling-system-q01"
                                            },
                                            {
                                                "text": "Which observations delimit the candidate episode rather than the body's entire journey?",
                                                "kind": "boundary",
                                                "id": "tracked-falling-system-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "meaning-and-force-test",
                                "name": "Meaning and force test",
                                "description": "Declares the interpretation and evaluates non-gravitational influences.",
                                "findings": [
                                    {
                                        "id": "qualification-evidence",
                                        "name": "Qualification evidence",
                                        "description": "Records why the motion qualifies strictly, approximately or only under a domain-specific usage.",
                                        "questions": [
                                            {
                                                "text": "Does 'free fall' here require gravity alone, permit bounded non-gravitational effects, or describe an activity such as descent before parachute deployment?",
                                                "kind": "definition",
                                                "id": "qualification-evidence-q01"
                                            },
                                            {
                                                "text": "What evidence constrains support, thrust, drag, buoyancy or electromagnetic forces during this interval?",
                                                "kind": "provenance",
                                                "id": "qualification-evidence-q02"
                                            },
                                            {
                                                "text": "What maximum non-gravitational effect is acceptable for the intended prediction?",
                                                "kind": "boundary",
                                                "id": "qualification-evidence-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "gravity-and-reference-frame",
                        "name": "Gravity and reference frame",
                        "description": "Defines how gravitational motion and measured acceleration are interpreted.",
                        "rationale": "Free fall can involve substantial coordinate acceleration while producing little accelerometer response, and its trajectory depends on the chosen gravitational description.",
                        "layers": [
                            {
                                "id": "reference-and-observer",
                                "name": "Reference and observer",
                                "description": "Anchors observations to coordinates, clocks and measurement locations.",
                                "findings": [
                                    {
                                        "id": "acceleration-interpretation",
                                        "name": "Acceleration interpretation",
                                        "description": "Distinguishes trajectory acceleration from accelerometer readings and accounts for the observer's motion.",
                                        "questions": [
                                            {
                                                "text": "Relative to which frame and clock are the body's position, velocity and acceleration reported?",
                                                "kind": "measurement",
                                                "id": "acceleration-interpretation-q01"
                                            },
                                            {
                                                "text": "Does the acceleration evidence come from tracked motion or an onboard accelerometer, and how are sensor orientation, location and calibration accounted for?",
                                                "kind": "provenance",
                                                "id": "acceleration-interpretation-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "gravitational-regime",
                                "name": "Gravitational regime",
                                "description": "Selects a gravitational description adequate to the episode's extent and required precision.",
                                "findings": [
                                    {
                                        "id": "field-validity",
                                        "name": "Field validity",
                                        "description": "Records the adopted field or spacetime description and the limits of simplifying it.",
                                        "questions": [
                                            {
                                                "text": "Which gravitational sources and field description are needed along the candidate trajectory?",
                                                "kind": "definition",
                                                "id": "field-validity-q01"
                                            },
                                            {
                                                "text": "Over what distance and duration is a constant local gravitational acceleration accurate enough?",
                                                "kind": "boundary",
                                                "id": "field-validity-q02"
                                            },
                                            {
                                                "text": "Could field variation, tidal effects or relativistic effects invalidate the selected body representation or prediction?",
                                                "kind": "boundary",
                                                "id": "field-validity-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "trajectory-and-observation",
                        "name": "Trajectory and observation",
                        "description": "Connects initial conditions, observed motion and bounded predictions.",
                        "rationale": "Recognition and useful prediction require more than a height: initial velocity, uncertainty and consistency with gravity-driven motion matter.",
                        "layers": [
                            {
                                "id": "initial-and-current-state",
                                "name": "Initial and current state",
                                "description": "Establishes the body's motion at known times without assuming release from rest.",
                                "findings": [
                                    {
                                        "id": "trajectory-state-evidence",
                                        "name": "Trajectory state evidence",
                                        "description": "Records position, velocity and their observational support at release or another usable epoch.",
                                        "questions": [
                                            {
                                                "text": "What position and velocity, including upward or sideways components, are known at the selected epoch?",
                                                "kind": "measurement",
                                                "id": "trajectory-state-evidence-q01"
                                            },
                                            {
                                                "text": "Which measurements establish that state, and what timing or tracking uncertainties remain?",
                                                "kind": "provenance",
                                                "id": "trajectory-state-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "prediction-and-residuals",
                                "name": "Prediction and residuals",
                                "description": "Checks whether propagated gravitational motion remains consistent with observations.",
                                "findings": [
                                    {
                                        "id": "bounded-motion-prediction",
                                        "name": "Bounded motion prediction",
                                        "description": "Records the prediction horizon, expected trajectory and discrepancies that may require another explanation.",
                                        "questions": [
                                            {
                                                "text": "What trajectory and uncertainty envelope follow from the current state and gravitational description over the required horizon?",
                                                "kind": "measurement",
                                                "id": "bounded-motion-prediction-q01"
                                            },
                                            {
                                                "text": "Are discrepancies consistent with measurement uncertainty, or do they indicate material drag, an applied force or an inadequate gravitational model?",
                                                "kind": "boundary",
                                                "id": "bounded-motion-prediction-q02"
                                            },
                                            {
                                                "text": "Which additional observation would best distinguish those explanations?",
                                                "kind": "action",
                                                "id": "bounded-motion-prediction-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "release-and-termination",
                        "name": "Release and termination",
                        "description": "Records entry into free fall and the events that end or interrupt it.",
                        "rationale": "Support removal, release transients and subsequent contact define different motion regimes that must not be treated as one uninterrupted episode.",
                        "layers": [
                            {
                                "id": "entry-conditions",
                                "name": "Entry conditions",
                                "description": "Locates the transition from supported or driven motion to qualifying gravitational motion.",
                                "findings": [
                                    {
                                        "id": "release-transition",
                                        "name": "Release transition",
                                        "description": "Identifies when support or propulsion ceased and whether a release impulse affected the initial state.",
                                        "questions": [
                                            {
                                                "text": "What event removed support or ended applied propulsion, and when did its transient forces cease?",
                                                "kind": "boundary",
                                                "id": "release-transition-q01"
                                            },
                                            {
                                                "text": "What observation or event record establishes the release time and any imparted velocity?",
                                                "kind": "provenance",
                                                "id": "release-transition-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "exit-and-continuity",
                                "name": "Exit and continuity",
                                "description": "Distinguishes continuing gravitational motion from contact, capture or consequential non-gravitational acceleration.",
                                "findings": [
                                    {
                                        "id": "termination-event",
                                        "name": "Termination event",
                                        "description": "Records the event or threshold crossing that ends the selected free-fall interpretation.",
                                        "questions": [
                                            {
                                                "text": "Which observed contact, capture, thrust event or force-threshold crossing ends this episode?",
                                                "kind": "boundary",
                                                "id": "termination-event-q01"
                                            },
                                            {
                                                "text": "If free fall resumes after an impulse or brief contact, should the observations establish a separate episode?",
                                                "kind": "boundary",
                                                "id": "termination-event-q02"
                                            },
                                            {
                                                "text": "For an orbiting body or a body moving away from a surface, what evidence establishes continued free fall within the observation window?",
                                                "kind": "measurement",
                                                "id": "termination-event-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "encounters-and-intervention",
                        "name": "Encounters and intervention",
                        "description": "Relates the trajectory to possible encounters and actions that could alter the episode.",
                        "rationale": "An agent must distinguish a predicted encounter from an observed impact and assess whether a proposed action can act within the remaining trajectory.",
                        "layers": [
                            {
                                "id": "encounter-forecast",
                                "name": "Encounter forecast",
                                "description": "Evaluates whether the trajectory intersects a surface, obstacle or moving target within a stated horizon.",
                                "findings": [
                                    {
                                        "id": "first-relevant-encounter",
                                        "name": "First relevant encounter",
                                        "description": "Records the earliest relevant predicted intersection, its uncertainty and the relative motion at that event.",
                                        "questions": [
                                            {
                                                "text": "Does the trajectory uncertainty envelope intersect any relevant surface or moving object within the prediction horizon?",
                                                "kind": "measurement",
                                                "id": "first-relevant-encounter-q01"
                                            },
                                            {
                                                "text": "What encounter time and relative velocity are predicted, and how uncertain are they?",
                                                "kind": "measurement",
                                                "id": "first-relevant-encounter-q02"
                                            },
                                            {
                                                "text": "Which observation would confirm contact rather than merely a close approach?",
                                                "kind": "boundary",
                                                "id": "first-relevant-encounter-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "trajectory-changing-actions",
                                "name": "Trajectory-changing actions",
                                "description": "Assesses available ways to monitor, deflect, brake or capture the falling body.",
                                "findings": [
                                    {
                                        "id": "intervention-feasibility",
                                        "name": "Intervention feasibility",
                                        "description": "Connects an authorised action's timing and physical capability to its effect on the predicted trajectory and free-fall classification.",
                                        "questions": [
                                            {
                                                "text": "Which authorised braking, deflection or capture actions can physically affect the body before the relevant encounter?",
                                                "kind": "action",
                                                "id": "intervention-feasibility-q01"
                                            },
                                            {
                                                "text": "How would each candidate action change the trajectory and the time at which free fall ends?",
                                                "kind": "action",
                                                "id": "intervention-feasibility-q02"
                                            },
                                            {
                                                "text": "What uncertainty or missing capability prevents selecting an intervention now?",
                                                "kind": "boundary",
                                                "id": "intervention-feasibility-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does this registry entry intend the physical motion regime, an activity such as skydiving freefall, or both with explicit interpretation labels?",
                "Which task-dependent tolerances should govern acceptance of drag or other non-gravitational effects as negligible?",
                "Should relativistic free fall be represented directly here or through a linked gravitational model with additional interpretation rules?",
                "How should extended, rotating or deforming bodies be classified when their centre-of-mass motion and local sensor readings support different assessments?",
                "Which neighbouring registered models should own orbital operations, aerodynamic descent and impact consequences while this entry retains the free-fall episode?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 10,
                "findings": 10,
                "questions": 26
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "abstract concept",
            "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 free fall, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise a free-fall episode, assess the validity and consequences of treating its motion as gravity-driven, and decide which predictions or interventions are justified.",
            "characteristics": {
                "substance": "activity",
                "origin": "conceptual",
                "agency": "inert"
            },
            "whatYouCanDoWithIt": [
                "observed and measured"
            ],
            "distinguishingFeatures": [
                "Described in 65 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 free fall, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "something that happens over time",
            "physicalCharacter": [
                "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": [
                "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about."
            ],
            "relatedModels": [],
            "standing": "Described in 65 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one free fall from another, and a free fall 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 free fall, 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 free fall, 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 free fall 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 free fall, 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 free fall, 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 free fall 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 free fall 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 free fall, 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 free fall, 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 free fall 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 free fall from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a free fall, 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 free fall, 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 free fall 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 free fall 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 free fall between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a free fall, 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 free fall, 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 free fall 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 free fall, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a free fall 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 free fall, 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 free fall, 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 free fall is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "process-and-outcome",
                        "name": "Process, inputs and outcome",
                        "description": "How a free fall proceeds, what it needs and what it leaves behind.",
                        "rationale": "An activity is known by its steps and its results, and both have to be recordable while it is still running.",
                        "layers": [
                            {
                                "id": "steps-and-sequence",
                                "name": "Steps and sequence",
                                "description": "The steps of a free fall, their order and what may run in parallel.",
                                "findings": [
                                    {
                                        "id": "steps-and-preconditions",
                                        "name": "Steps, preconditions and completion",
                                        "description": "What has to be true before each step of a free fall and what marks it done.",
                                        "questions": [
                                            {
                                                "id": "steps-and-preconditions-q01",
                                                "text": "What identifies and describes a step of a free fall, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "steps-and-preconditions-q02",
                                                "text": "Who or what asserted this about a step of a free fall, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "steps-and-preconditions-q03",
                                                "text": "What may an agent decide or do once a step of a free fall is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "inputs-and-results",
                                "name": "Inputs, resources and results",
                                "description": "What a free fall consumes and what it produces.",
                                "findings": [
                                    {
                                        "id": "inputs-and-outputs",
                                        "name": "Inputs, outputs and side effects",
                                        "description": "The resources a free fall takes and the results it leaves, wanted or not.",
                                        "questions": [
                                            {
                                                "id": "inputs-and-outputs-q01",
                                                "text": "What identifies and describes the inputs and results of a free fall, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "inputs-and-outputs-q02",
                                                "text": "Who or what asserted this about the inputs and results of a free fall, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "inputs-and-outputs-q03",
                                                "text": "What may an agent decide or do once the inputs and results of a free fall is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "definitions-in-contest",
                        "name": "Definitions and who holds them",
                        "description": "What free fall is taken to mean, and by whom.",
                        "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.",
                        "layers": [
                            {
                                "id": "competing-definitions",
                                "name": "Competing definitions",
                                "description": "The main readings and the traditions behind them.",
                                "findings": [
                                    {
                                        "id": "definition-map",
                                        "name": "Definitions and their holders",
                                        "description": "Each definition with the school or body that holds it.",
                                        "questions": [
                                            {
                                                "id": "definition-map-q01",
                                                "text": "Which definitions of free fall are in use, and which tradition or body holds each?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "definition-map-q02",
                                                "text": "What turns on the difference between them in practice?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "operationalisation",
                                "name": "Operationalisation",
                                "description": "How it is measured or applied when it has to be.",
                                "findings": [
                                    {
                                        "id": "operational-record",
                                        "name": "Measures and proxies",
                                        "description": "Instruments and indicators used to stand in for it.",
                                        "questions": [
                                            {
                                                "id": "operational-record-q01",
                                                "text": "How is free fall operationalised or measured in practice, and by what instrument?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "operational-record-q02",
                                                "text": "What does that operationalisation leave out, and when does that matter?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "instances-and-use",
                        "name": "Instances, use and consequence",
                        "description": "What counts as an instance of free fall and what follows from calling something that.",
                        "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.",
                        "layers": [
                            {
                                "id": "instances",
                                "name": "What counts as an instance",
                                "description": "Clear cases, borderline cases and non-cases.",
                                "findings": [
                                    {
                                        "id": "instance-tests",
                                        "name": "Tests for an instance",
                                        "description": "What would settle whether something falls under it.",
                                        "questions": [
                                            {
                                                "id": "instance-tests-q01",
                                                "text": "What would settle whether something is an instance of free fall?",
                                                "kind": "boundary"
                                            },
                                            {
                                                "id": "instance-tests-q02",
                                                "text": "Which borderline cases are argued about, and on what grounds?",
                                                "kind": "definition"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "consequence",
                                "name": "Consequence of application",
                                "description": "Rights, duties or decisions that follow from the label.",
                                "findings": [
                                    {
                                        "id": "consequence-record",
                                        "name": "What the label licenses",
                                        "description": "What an agent may do once something is classified this way.",
                                        "questions": [
                                            {
                                                "id": "consequence-record-q01",
                                                "text": "What follows practically once something is treated as free fall?",
                                                "kind": "action"
                                            },
                                            {
                                                "id": "consequence-record-q02",
                                                "text": "What must an agent not infer from the label alone?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a free fall 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 free fall and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a free fall, 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 free fall, 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 free fall 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 free fall is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a free fall, 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 free fall, 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 free fall is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 6,
                "layers": 12,
                "findings": 14,
                "questions": 38
            }
        }
    }
}