{
    "model": {
        "rank": 3590,
        "code": "thing-q192249",
        "model_id": "vr.tr.saddle",
        "name": "saddle",
        "purpose": "Enable an AI agent to recognise an animal-riding saddle, assess its suitability and condition, and identify what fitting, use or maintenance actions require further evidence.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q192249/",
        "tier": 2,
        "score": 84,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "serigote",
                "sillion",
                "Charro saddle",
                "Western saddle",
                "allround saddle",
                "Patrac",
                "cossack saddle",
                "jumping saddle",
                "sidesaddle",
                "McClellan saddle",
                "English saddle",
                "Australian Stock Saddle",
                "pack saddle",
                "kura",
                "camel saddle",
                "roping saddle",
                "Cacolet"
            ],
            "aliasCount": 17,
            "merged": 17,
            "knownIn": 84,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": "vr.tr.saddle",
            "source": {
                "dataset": "wikidata",
                "item": "Q192249",
                "url": "https://www.wikidata.org/wiki/Q192249",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T14:37:54Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 23.3,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c4c-ca22-74a2-ab4f-053493ac39b3\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: saddle\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 004: 1001 register",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 73,
                        "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: 01a07c4c-ca19-7ed3-a29e-3765338994de\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: saddle\nRegistry id: vr.tr.saddle\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext fo"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q192249",
                "registryId": "vr.tr.saddle",
                "name": "saddle",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q192249/",
            "model": {
                "registry_id": "vr.tr.saddle",
                "name": "saddle",
                "purpose": "Enable an AI agent to recognise an animal-riding saddle, assess its suitability and condition, and identify what fitting, use or maintenance actions require further evidence.",
                "definition": "A saddle is a fitted supporting seat secured to the back of a horse or another riding animal to support and stabilize a rider while distributing the rider's load over suitable bearing areas.",
                "scope_statement": "This model provisionally covers saddles that support a rider on a horse or another riding animal, including their load-bearing construction, animal and rider interfaces, attachment provisions and serviceability; the registry provides no definition confirming this sense.",
                "in_scope": [
                    "Saddle types and the riding activities they are intended to support",
                    "Load-bearing construction, including treed and treeless designs",
                    "Fit between saddle, riding animal and rider",
                    "Saddle-side provisions for girths or cinches, stirrups and accessories",
                    "Saddle placement, stability and behaviour during riding",
                    "Condition, maintenance, repair history and restrictions on use"
                ],
                "out_of_scope": [
                    "Bicycle, motorcycle and other vehicle saddles",
                    "Pack saddles intended primarily to carry cargo",
                    "Animal anatomy, health and training as independent subjects",
                    "Rider health, riding skill and protective equipment",
                    "Bridles, reins and other equipment for directing the animal",
                    "Separate models of girths, cinches, stirrups and saddle pads, beyond their compatibility with the saddle"
                ],
                "distinguishing_features": [
                    "It provides a structured seat for a rider on an animal, distinguishing the selected sense from vehicle-mounted seats.",
                    "It has a load-bearing arrangement intended to transfer rider loads to the animal, distinguishing it from a saddle cloth or protective cover alone.",
                    "It provides a means of being secured for riding, rather than merely resting on the animal as a blanket does.",
                    "Its principal supported load is a rider, distinguishing it from a cargo-oriented pack saddle.",
                    "Its identity does not depend on having a rigid tree, horn or stirrups; those features distinguish particular constructions and uses."
                ],
                "characteristics": [
                    {
                        "name": "Intended riding use",
                        "kind": "category",
                        "unit_or_values": "Manufacturer-stated or evidenced riding discipline and activity; unknown",
                        "why_it_matters": "Seat geometry, attachments and acceptable use depend on the activity for which the saddle was designed."
                    },
                    {
                        "name": "Intended animal",
                        "kind": "relation",
                        "unit_or_values": "Animal species or type, and the individual animal assessed for fit",
                        "why_it_matters": "A saddle type's intended animal does not establish fit to a particular animal."
                    },
                    {
                        "name": "Load-bearing construction",
                        "kind": "category",
                        "unit_or_values": "Rigid tree; flexible tree; treeless; other documented construction; unknown",
                        "why_it_matters": "Construction determines which structural elements and fitting methods must be examined."
                    },
                    {
                        "name": "Saddle mass",
                        "kind": "measurement",
                        "unit_or_values": "kg, stating which fittings are included",
                        "why_it_matters": "The saddle contributes to the total carried load and affects handling."
                    },
                    {
                        "name": "Seat dimensions",
                        "kind": "measurement",
                        "unit_or_values": "mm or inches, with measurement landmarks and saddle tradition recorded",
                        "why_it_matters": "Nominal seat sizes cannot be compared reliably without knowing how they were measured."
                    },
                    {
                        "name": "Animal-facing support geometry",
                        "kind": "measurement",
                        "unit_or_values": "Support length, width, curvature and clearance dimensions in mm or degrees, with landmarks and loaded or unloaded state",
                        "why_it_matters": "A single width label cannot describe how the saddle bears on an animal."
                    },
                    {
                        "name": "Securing arrangement",
                        "kind": "category",
                        "unit_or_values": "Documented billet, rigging or other attachment configuration",
                        "why_it_matters": "The attachment arrangement constrains compatible girths or cinches and how securing forces act."
                    },
                    {
                        "name": "Assessed fit",
                        "kind": "state",
                        "unit_or_values": "Unassessed; acceptable for recorded configuration; adjustment required; unsuitable; inconclusive",
                        "why_it_matters": "Fit must be tied to the animal, rider, padding, activity, assessment date and evidence."
                    },
                    {
                        "name": "Serviceability",
                        "kind": "state",
                        "unit_or_values": "Unassessed; serviceable within recorded limits; restricted; withdrawn pending inspection; retired",
                        "why_it_matters": "Visible appearance alone does not establish that load-bearing parts are safe to use."
                    }
                ],
                "affordances": [
                    "Classify a saddle by riding purpose and load-bearing construction.",
                    "Compare candidate saddles for a specified animal, rider and activity while identifying missing fit evidence.",
                    "Record a fitting assessment with its padding, attachments and loaded conditions.",
                    "Check documented compatibility of girths or cinches, stirrup fittings and accessories.",
                    "Flag movement, damage or uncertain structural integrity for qualified assessment before further use.",
                    "Track cleaning, adjustment and repair, including when these changes require fit or serviceability reassessment."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "riding-purpose-and-identity",
                        "name": "Riding purpose and identity",
                        "description": "Establishes which saddle sense and riding role the model describes.",
                        "rationale": "The name saddle alone does not distinguish animal-riding equipment from vehicle seats or establish a riding discipline.",
                        "layers": [
                            {
                                "id": "saddle-sense",
                                "name": "Saddle sense",
                                "description": "Separates the selected animal-riding sense from neighbouring equipment.",
                                "findings": [
                                    {
                                        "id": "rider-support-boundary",
                                        "name": "Rider support boundary",
                                        "description": "Record whether the object is intended as the rider's saddle rather than cargo support, a pad or a vehicle seat.",
                                        "questions": [
                                            {
                                                "text": "What evidence identifies this as an animal-riding saddle?",
                                                "kind": "definition",
                                                "id": "rider-support-boundary-q01"
                                            },
                                            {
                                                "text": "Does its intended role place it within rider support, cargo support or another saddle sense?",
                                                "kind": "boundary",
                                                "id": "rider-support-boundary-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "riding-role",
                                "name": "Riding role",
                                "description": "Connects saddle design to its intended riding activity.",
                                "findings": [
                                    {
                                        "id": "intended-use-evidence",
                                        "name": "Intended use evidence",
                                        "description": "Record intended riding activities and distinguish supported uses from assumptions based on appearance.",
                                        "questions": [
                                            {
                                                "text": "Which riding activities does the maker or other identifiable evidence associate with this saddle type?",
                                                "kind": "provenance",
                                                "id": "intended-use-evidence-q01"
                                            },
                                            {
                                                "text": "Which proposed activities require additional confirmation of suitability?",
                                                "kind": "action",
                                                "id": "intended-use-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "load-bearing-construction",
                        "name": "Load-bearing construction",
                        "description": "Describes how the saddle supports the rider and transfers load to the animal.",
                        "rationale": "Treed and treeless saddles require different structural descriptions; exterior style does not establish the load path.",
                        "layers": [
                            {
                                "id": "internal-support",
                                "name": "Internal support",
                                "description": "Identifies the elements that maintain shape and carry riding loads.",
                                "findings": [
                                    {
                                        "id": "support-system",
                                        "name": "Support system",
                                        "description": "Record the tree or alternative support structure, its materials and any documented adjustment mechanism.",
                                        "questions": [
                                            {
                                                "text": "Which internal elements carry the rider's load, and how was their construction established?",
                                                "kind": "provenance",
                                                "id": "support-system-q01"
                                            },
                                            {
                                                "text": "Which structural adjustments are permitted, by whom and using what documented procedure?",
                                                "kind": "action",
                                                "id": "support-system-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "bearing-surfaces",
                                "name": "Bearing surfaces",
                                "description": "Describes the panels, bars or other animal-facing support arrangement.",
                                "findings": [
                                    {
                                        "id": "contact-and-clearance-geometry",
                                        "name": "Contact and clearance geometry",
                                        "description": "Record intended bearing regions and clearance features using terms appropriate to the saddle's construction.",
                                        "questions": [
                                            {
                                                "text": "Which surfaces are intended to bear load, and which regions are intended to remain clear?",
                                                "kind": "definition",
                                                "id": "contact-and-clearance-geometry-q01"
                                            },
                                            {
                                                "text": "What are the measured support dimensions and clearance geometry, under which loading conditions?",
                                                "kind": "measurement",
                                                "id": "contact-and-clearance-geometry-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "animal-and-rider-fit",
                        "name": "Animal and rider fit",
                        "description": "Assesses the saddle as an interface between a particular animal and rider.",
                        "rationale": "Saddle suitability depends on both bodies and the riding configuration, rather than on nominal saddle size alone.",
                        "layers": [
                            {
                                "id": "animal-fit",
                                "name": "Animal fit",
                                "description": "Records animal-specific placement, support and clearance evidence.",
                                "findings": [
                                    {
                                        "id": "fit-assessment-context",
                                        "name": "Fit assessment context",
                                        "description": "Tie every fit judgement to the animal, assessor, date, padding, securing arrangement and observed conditions.",
                                        "questions": [
                                            {
                                                "text": "For which animal and complete equipment configuration was fit assessed, and by whom?",
                                                "kind": "provenance",
                                                "id": "fit-assessment-context-q01"
                                            },
                                            {
                                                "text": "What observations or measurements support the judgement about bearing, clearance and balance?",
                                                "kind": "measurement",
                                                "id": "fit-assessment-context-q02"
                                            },
                                            {
                                                "text": "What changes in the animal or equipment would trigger reassessment?",
                                                "kind": "action",
                                                "id": "fit-assessment-context-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "rider-fit",
                                "name": "Rider fit",
                                "description": "Examines whether seat and leg-support geometry suit the rider and intended activity.",
                                "findings": [
                                    {
                                        "id": "seat-and-leg-interface",
                                        "name": "Seat and leg interface",
                                        "description": "Record usable seat space, rider balance and interaction with flaps, blocks or equivalent features where present.",
                                        "questions": [
                                            {
                                                "text": "How were seat size and relevant leg-support dimensions measured?",
                                                "kind": "measurement",
                                                "id": "seat-and-leg-interface-q01"
                                            },
                                            {
                                                "text": "Can the intended rider adopt the required riding position without being constrained by the saddle's seat or support features?",
                                                "kind": "boundary",
                                                "id": "seat-and-leg-interface-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "securing-and-riding-behaviour",
                        "name": "Securing and riding behaviour",
                        "description": "Connects attachment compatibility with saddle stability during use.",
                        "rationale": "A saddle must remain appropriately positioned while its securing and rider-support fittings carry changing loads.",
                        "layers": [
                            {
                                "id": "attachment-interfaces",
                                "name": "Attachment interfaces",
                                "description": "Identifies saddle-side fittings and the equipment they can accept.",
                                "findings": [
                                    {
                                        "id": "rigging-and-stirrup-compatibility",
                                        "name": "Rigging and stirrup compatibility",
                                        "description": "Record girth or cinch attachment points, stirrup attachment provisions and any documented release features.",
                                        "questions": [
                                            {
                                                "text": "Which girths or cinches and stirrup assemblies are compatible with the saddle's actual fittings?",
                                                "kind": "boundary",
                                                "id": "rigging-and-stirrup-compatibility-q01"
                                            },
                                            {
                                                "text": "What instructions govern attachment, adjustment and any release mechanism present?",
                                                "kind": "action",
                                                "id": "rigging-and-stirrup-compatibility-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "dynamic-stability",
                                "name": "Dynamic stability",
                                "description": "Records saddle movement and balance under the intended riding conditions.",
                                "findings": [
                                    {
                                        "id": "movement-under-load",
                                        "name": "Movement under load",
                                        "description": "Document slipping, rotation, rocking or other movement alongside the conditions in which it occurs, without assigning an unsupported cause.",
                                        "questions": [
                                            {
                                                "text": "What saddle movement was observed during mounting and the assessed riding activities?",
                                                "kind": "measurement",
                                                "id": "movement-under-load-q01"
                                            },
                                            {
                                                "text": "Which observations require stopping use or obtaining a further fitting assessment?",
                                                "kind": "action",
                                                "id": "movement-under-load-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "condition-and-service-life",
                        "name": "Condition and service life",
                        "description": "Tracks deterioration and interventions that affect saddle support, attachment integrity or fit.",
                        "rationale": "Structural damage, worn securing points and altered padding can change whether a previously suitable saddle remains usable.",
                        "layers": [
                            {
                                "id": "integrity-assessment",
                                "name": "Integrity assessment",
                                "description": "Separates cosmetic wear from defects or uncertainty affecting load-bearing parts.",
                                "findings": [
                                    {
                                        "id": "structural-and-attachment-condition",
                                        "name": "Structural and attachment condition",
                                        "description": "Record condition evidence for the support structure, stitching, billets or rigging, stirrup fittings and bearing surfaces as applicable.",
                                        "questions": [
                                            {
                                                "text": "What damage, deformation, looseness or wear is present in the saddle's load-bearing and securing components?",
                                                "kind": "measurement",
                                                "id": "structural-and-attachment-condition-q01"
                                            },
                                            {
                                                "text": "Which components cannot be adequately assessed without specialist inspection or access to concealed parts?",
                                                "kind": "boundary",
                                                "id": "structural-and-attachment-condition-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "maintenance-and-modification",
                                "name": "Maintenance and modification",
                                "description": "Records care and alterations with their consequences for fit and serviceability.",
                                "findings": [
                                    {
                                        "id": "intervention-history",
                                        "name": "Intervention history",
                                        "description": "Track material-appropriate care, panel or padding work, replacement fittings and structural alterations where applicable.",
                                        "questions": [
                                            {
                                                "text": "Which maintenance, repairs or adjustments were performed, by whom and under what instructions?",
                                                "kind": "provenance",
                                                "id": "intervention-history-q01"
                                            },
                                            {
                                                "text": "What inspection or fit reassessment is required before the altered saddle returns to use?",
                                                "kind": "action",
                                                "id": "intervention-history-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "evidence-and-external-alignment",
                        "name": "Evidence and external alignment",
                        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
                        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
                        "layers": [
                            {
                                "id": "reported-evidence",
                                "name": "Reported evidence",
                                "description": "Findings from the breadth pass, kept separate from the structural claims.",
                                "findings": [
                                    {
                                        "id": "evidence-confidence-notes",
                                        "name": "Check these first",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "The registry supplies no sense; this account assumes an animal-riding saddle, principally for horses, rather than a bicycle seat or a technical support fitting.",
                                            "Seat-size ranges are approximate retail conventions; measurement methods differ between saddle traditions and do not establish fit for either rider or animal.",
                                            "No specific equipment standard is asserted from recall; applicable competition tack rules require checking with the relevant governing body."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of saddle 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": [
                                            "General-purpose English saddle",
                                            "Dressage saddle",
                                            "Jumping saddle",
                                            "Western saddle",
                                            "Endurance saddle",
                                            "Sidesaddle"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of saddle 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": "Manufacturer model and serial numbers",
                                                "value_or_pattern": "Manufacturer-specific model designation and, where provided, serial number",
                                                "note": "Identify a product design or individual saddle; there is no universal numbering scheme."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of saddle 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": [
                                            "Recreational riding and trekking",
                                            "Dressage, jumping and other equestrian competition",
                                            "Livestock handling and ranch work",
                                            "Mounted patrol and ceremonial riding",
                                            "Endurance riding over long distances"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of saddle 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": "Nominal adult English saddle seat size",
                                                "typical_range": "Approximately 16-18",
                                                "unit": "inch"
                                            },
                                            {
                                                "quantity": "Nominal adult Western saddle seat size",
                                                "typical_range": "Approximately 14-17",
                                                "unit": "inch"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of saddle 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": [
                                            "Poor fit or uneven bearing can cause localized pressure, rubbing, pain and back injury to the animal.",
                                            "Loose or incorrectly positioned girths or cinches can allow the saddle to slip or rotate, causing a fall.",
                                            "Failure of girth straps, rigging, stitching or other load-bearing attachments can cause loss of rider support.",
                                            "A damaged saddle tree or distorted supporting structure can create pressure concentrations and instability.",
                                            "A rider's foot can become caught in a stirrup during a fall, creating a dragging hazard."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of saddle 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": [
                                            "English and Western traditions use different saddle structures, seat-sizing conventions and terminology, including girth versus cinch.",
                                            "Distinct riding traditions, including Iberian and Australian stock riding, use characteristic saddle designs adapted to their riding practices."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of saddle 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": "Bicycle saddle",
                                                "difference": "Supports a cyclist and mounts to a bicycle rather than fitting an animal's back; excluded from the sense described here."
                                            },
                                            {
                                                "name": "Pack saddle",
                                                "difference": "Primarily supports cargo on an animal rather than seating a rider."
                                            },
                                            {
                                                "name": "Saddle pad",
                                                "difference": "An intervening textile or cushioning layer beneath a saddle rather than the supporting seat itself."
                                            },
                                            {
                                                "name": "Harness",
                                                "difference": "An arrangement of straps and fittings for restraint, attachment or transmitting draft force rather than a rider's seat."
                                            },
                                            {
                                                "name": "Stirrup",
                                                "difference": "Supports a rider's foot and is ordinarily attached to the saddle rather than constituting the whole seat."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of saddle this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does vr.tr.saddle denote animal-riding saddles specifically, or must its authoritative scope also accommodate bicycle, motorcycle or pack saddles?",
                "Which saddle traditions and riding-animal types need explicit variants, and which construction terms can be shared without distorting their differences?",
                "Which authoritative fitting methods and criteria apply to each construction, and how should conflicting assessments be represented?",
                "Which standards, test methods or certification schemes apply to complete saddles or particular fittings in the intended jurisdictions and riding activities?",
                "What evidence supports construction-specific service limits, permitted adjustments and retirement decisions when maker documentation or internal inspection is unavailable?"
            ],
            "statistics": {
                "bundles": 6,
                "layers": 11,
                "findings": 18,
                "questions": 29
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "device, machine or tool",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a saddle, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise an animal-riding saddle, assess its suitability and condition, and identify what fitting, use or maintenance actions require further evidence.",
            "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: serigote, sillion, Charro saddle, Western saddle, allround saddle, Patrac, cossack saddle, jumping saddle, sidesaddle, McClellan saddle, English saddle, Australian Stock Saddle.",
                "17 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 84 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 saddle, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "matter you can touch",
            "physicalCharacter": [
                "Mobility varies between examples.",
                "Does nothing on its own; everything it does, something else did to it.",
                "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing."
            ],
            "whatCanBeDoneWithIt": [
                "observe it, measure it, record its state"
            ],
            "howItIsRecognised": [
                "Recognised by form, by the arrangement of its controls, and by markings - a plate, a model number, a certification mark. Form alone rarely separates two models that do very different things."
            ],
            "relatedModels": [
                {
                    "relation": "covers",
                    "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.",
                    "targets": [
                        "serigote",
                        "sillion",
                        "Charro saddle",
                        "Western saddle",
                        "allround saddle",
                        "Patrac",
                        "cossack saddle",
                        "jumping saddle",
                        "sidesaddle",
                        "McClellan saddle",
                        "English saddle",
                        "Australian Stock Saddle"
                    ]
                }
            ],
            "standing": "Described in 84 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 17 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 saddle from another, and a saddle 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 saddle, 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 saddle, 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 saddle 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 saddle, 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 saddle, 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 saddle 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 saddle 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 saddle, 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 saddle, 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 saddle 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 saddle from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a saddle, 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 saddle, 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 saddle 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 saddle 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 saddle, 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 saddle, 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 saddle 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 saddle is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a saddle, 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 saddle, 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 saddle 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 saddle is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a saddle, 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 saddle, 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 saddle 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 saddle 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 saddle is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a saddle, 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 saddle, 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 saddle 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 saddle 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 saddle, 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 saddle, 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 saddle 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 saddle 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 saddle between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a saddle, 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 saddle, 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 saddle 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 saddle, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a saddle 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 saddle, 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 saddle, 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 saddle is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "function-and-principle",
                        "name": "Function and operating principle",
                        "description": "What saddle is for and how it achieves it.",
                        "rationale": "Two devices with the same name can work on different principles, and the principle is what predicts failure and constrains use.",
                        "layers": [
                            {
                                "id": "intended-function",
                                "name": "Intended function",
                                "description": "The job it does, and the jobs it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-record",
                                        "name": "Function, principle and variants",
                                        "description": "What it does, how, and which variants do it differently.",
                                        "questions": [
                                            {
                                                "id": "function-record-q01",
                                                "text": "What function does saddle perform, on what operating principle, and which variants differ in that principle?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "function-record-q02",
                                                "text": "What use falls outside the intended function but happens in practice?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "capacity-and-rating",
                                "name": "Capacity and rating",
                                "description": "The numbers that say what it can do and where it stops.",
                                "findings": [
                                    {
                                        "id": "ratings",
                                        "name": "Ratings and their conditions",
                                        "description": "Rated capacity, power, throughput and the conditions each assumes.",
                                        "questions": [
                                            {
                                                "id": "ratings-q01",
                                                "text": "What ratings characterise saddle, in what units, and under what stated conditions?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "ratings-q02",
                                                "text": "What happens beyond the rating - degradation, refusal, damage - and how is that detected?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "operation-and-state",
                        "name": "Operation, controls and state",
                        "description": "How saddle is operated and what state it is in right now.",
                        "rationale": "An agent acting on a device needs its current state and the controls that change it, not just its specification.",
                        "layers": [
                            {
                                "id": "controls-and-modes",
                                "name": "Controls and modes",
                                "description": "What can be set, what that changes, and what is interlocked.",
                                "findings": [
                                    {
                                        "id": "control-surface",
                                        "name": "Control surface and interlocks",
                                        "description": "The settings available and the conditions that block them.",
                                        "questions": [
                                            {
                                                "id": "control-surface-q01",
                                                "text": "What controls and modes does saddle have, and what does each change?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "control-surface-q02",
                                                "text": "Which actions are interlocked or forbidden in which state, and what must be true before acting?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-maintenance",
                                "name": "Condition and maintenance",
                                "description": "Wear, service intervals, consumables and the line between working and broken.",
                                "findings": [
                                    {
                                        "id": "service-record",
                                        "name": "Condition, service and consumables",
                                        "description": "What is consumed, what is serviced, and how condition is judged.",
                                        "questions": [
                                            {
                                                "id": "service-record-q01",
                                                "text": "What consumables and service does saddle need, at what interval, and on whose authority?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "service-record-q02",
                                                "text": "What evidence separates a unit that is working from one that is out of service?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "kind-model-unit",
                        "name": "Kind, model and unit",
                        "description": "Whether a claim about saddle is about the kind, a product line, or one physical unit.",
                        "rationale": "This is the boundary most often got wrong for made things, and getting it wrong mixes a catalogue entry with the machine in the yard.",
                        "layers": [
                            {
                                "id": "level-of-reference",
                                "name": "Level of reference",
                                "description": "The three levels and what belongs at each.",
                                "findings": [
                                    {
                                        "id": "level-rules",
                                        "name": "What belongs to kind, model and unit",
                                        "description": "Which properties are shared by all of them and which are not.",
                                        "questions": [
                                            {
                                                "id": "level-rules-q01",
                                                "text": "Which facts about saddle hold for every one of them, which for a model, and which only for one unit?",
                                                "kind": "boundary"
                                            },
                                            {
                                                "id": "level-rules-q02",
                                                "text": "What identifies an individual unit, and what should an agent do when it has only the kind?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "standards-and-conformity",
                                "name": "Standards and conformity",
                                "description": "The standards a working example must meet and who attests it.",
                                "findings": [
                                    {
                                        "id": "conformity",
                                        "name": "Standards, marks and attestation",
                                        "description": "Which standard applies, who certifies, and what the mark means.",
                                        "questions": [
                                            {
                                                "id": "conformity-q01",
                                                "text": "Which standards govern saddle, issued by whom, and what does conformity actually assert?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "conformity-q02",
                                                "text": "What may an agent conclude from a certification mark, and what may it not?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a saddle 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 saddle and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a saddle, 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 saddle, 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 saddle 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 saddle is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a saddle, 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 saddle, 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 saddle is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 8,
                "layers": 17,
                "findings": 19,
                "questions": 51
            }
        }
    }
}