{
    "model": {
        "rank": 3652,
        "code": "thing-q44571",
        "model_id": "vr.tr.gnu",
        "name": "GNU",
        "purpose": "Enable an agent to identify GNU software systems and components, assess their composition and freedom-related requirements, and choose appropriate installation, use, modification, or redistribution actions.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q44571/",
        "tier": 2,
        "score": 83,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "GNU/Hurd"
            ],
            "aliasCount": 1,
            "merged": 1,
            "knownIn": 83,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q44571",
                "url": "https://www.wikidata.org/wiki/Q44571",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T14:47:07Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 21.3,
                        "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: 01a07c55-4a85-79a3-85dd-4badcdd2d369\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: GNU\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 registered ",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 68.8,
                        "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: 01a07c55-4a74-7271-a4dd-da24e6703407\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: GNU\nRegistry id: vr.tr.gnu\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext for this"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q44571",
                "registryId": "vr.tr.gnu",
                "name": "GNU",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q44571/",
            "model": {
                "registry_id": "vr.tr.gnu",
                "name": "GNU",
                "purpose": "Enable an agent to identify GNU software systems and components, assess their composition and freedom-related requirements, and choose appropriate installation, use, modification, or redistribution actions.",
                "definition": "GNU is a Unix-compatible operating system composed of free software, developed by the GNU Project, whose components are also widely used with the Linux kernel.",
                "scope_statement": "This draft provisionally interprets vr.tr.gnu as GNU, the free-software operating-system undertaking and its associated software collection; it owns GNU-specific identity, system composition, component provenance, and actionable software requirements, while leaving the conflicting PHY / PHY.OBJ classification unresolved.",
                "in_scope": [
                    "The distinction between GNU as an operating system, the GNU Project, and individual GNU packages",
                    "GNU package membership and release provenance",
                    "Composition of a GNU-based operating environment, including its kernel and external components",
                    "Compatibility requirements among GNU tools, libraries, and supported environments",
                    "Component-specific permissions and obligations relevant to modification and redistribution"
                ],
                "out_of_scope": [
                    "Gnus or wildebeests as biological organisms",
                    "Physical computers and their hardware condition",
                    "The Free Software Foundation as an institution",
                    "Linux as an independently governed kernel",
                    "Distribution-specific packaging, release policy, and support commitments",
                    "Free software as a general philosophical and licensing category"
                ],
                "distinguishing_features": [
                    "A record denotes GNU software or the GNU operating-system undertaking, rather than identifying a physical animal or device.",
                    "Official GNU package membership requires attributable project evidence; a package being free software or using a GNU license is insufficient.",
                    "The kernel is identified separately: a reference to Linux alone does not establish that a complete system is GNU-based.",
                    "A GNU package installed on another operating system does not by itself make that operating system GNU.",
                    "An upstream GNU release is distinguished from a distribution build or third-party fork through its origin and modification history."
                ],
                "characteristics": [
                    {
                        "name": "GNU referent",
                        "kind": "category",
                        "unit_or_values": "operating-system undertaking | software collection | composed environment | individual package | unresolved",
                        "why_it_matters": "Prevents claims about one GNU package from being applied to the entire operating system or project."
                    },
                    {
                        "name": "GNU package membership",
                        "kind": "relation",
                        "unit_or_values": "package linked to attributable GNU membership evidence, with date",
                        "why_it_matters": "Separates official GNU packages from compatible software, forks, and software using GNU licenses."
                    },
                    {
                        "name": "System composition",
                        "kind": "relation",
                        "unit_or_values": "kernel, C library, compiler toolchain, shell, utilities, and external components linked to identified releases",
                        "why_it_matters": "Establishes what the actual environment contains before compatibility or operational claims are made."
                    },
                    {
                        "name": "Release provenance",
                        "kind": "relation",
                        "unit_or_values": "upstream package and release, source origin, distributor, patches, and available integrity evidence",
                        "why_it_matters": "Distinguishes GNU upstream behavior from changes introduced during packaging or local modification."
                    },
                    {
                        "name": "Compatibility target",
                        "kind": "category",
                        "unit_or_values": "processor architecture, operating environment, ABI, and required dependency versions",
                        "why_it_matters": "Determines whether a component can build or execute in the intended GNU environment."
                    },
                    {
                        "name": "Component licensing",
                        "kind": "relation",
                        "unit_or_values": "component or file linked to applicable license text, version, exceptions, and notices",
                        "why_it_matters": "Supports action-specific review without assuming that all GNU software has identical licensing terms."
                    },
                    {
                        "name": "Operational readiness",
                        "kind": "state",
                        "unit_or_values": "unassessed | buildable | installed | verified for intended workload | impaired",
                        "why_it_matters": "Separates possession of GNU source or binaries from evidence that a usable environment exists."
                    }
                ],
                "affordances": [
                    "Resolve whether a GNU reference denotes the whole undertaking, a composed system, or a particular package.",
                    "Trace installed GNU components to upstream releases and downstream modifications.",
                    "Assess whether a proposed kernel, library, and toolchain combination supports an intended workload.",
                    "Plan installation, rebuilding, or replacement of identified GNU components using environment-specific evidence.",
                    "Identify the license texts, notices, and source materials requiring review before a proposed redistribution.",
                    "Route defects to the appropriate GNU package, downstream distributor, or external component maintainer."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "gnu-identity-and-boundaries",
                        "name": "GNU identity and boundaries",
                        "description": "Establishes which GNU referent the registry entry and any observed instance denote.",
                        "rationale": "GNU can denote an operating-system undertaking, its software collection, or loosely a system containing GNU components; these meanings support different judgments.",
                        "layers": [
                            {
                                "id": "registry-sense",
                                "name": "Registry sense",
                                "description": "Resolves the intended meaning before accepting the supplied physical-object classification.",
                                "findings": [
                                    {
                                        "id": "intended-gnu-referent",
                                        "name": "Intended GNU referent",
                                        "description": "Record evidence for the software interpretation and retain the registry classification conflict until it is resolved.",
                                        "questions": [
                                            {
                                                "text": "Which originating registry or Wikidata record establishes what GNU means in vr.tr.gnu?",
                                                "kind": "provenance",
                                                "id": "intended-gnu-referent-q01"
                                            },
                                            {
                                                "text": "Does PHY / PHY.OBJ reflect an intended physical referent or a classification error?",
                                                "kind": "boundary",
                                                "id": "intended-gnu-referent-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "project-system-package",
                                "name": "Project, system, and package",
                                "description": "Separates GNU's collective identity from its individual software artifacts and organizational neighbours.",
                                "findings": [
                                    {
                                        "id": "gnu-membership-and-system-identity",
                                        "name": "GNU membership and system identity",
                                        "description": "Identify whether a claim concerns official package membership, a complete operating environment, or stewardship of the GNU undertaking.",
                                        "questions": [
                                            {
                                                "text": "What evidence establishes that a named package belongs to GNU rather than merely using a GNU license?",
                                                "kind": "provenance",
                                                "id": "gnu-membership-and-system-identity-q01"
                                            },
                                            {
                                                "text": "Which claims belong to GNU itself, and which belong to a package, distribution, or supporting institution?",
                                                "kind": "boundary",
                                                "id": "gnu-membership-and-system-identity-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "gnu-system-composition",
                        "name": "GNU system composition",
                        "description": "Describes how GNU software participates in a concrete operating environment.",
                        "rationale": "GNU identity alone does not specify a kernel, component inventory, or usable execution environment.",
                        "layers": [
                            {
                                "id": "kernel-and-user-environment",
                                "name": "Kernel and user environment",
                                "description": "Identifies the kernel separately from GNU libraries, tools, and other system software.",
                                "findings": [
                                    {
                                        "id": "kernel-user-environment-pairing",
                                        "name": "Kernel and user environment pairing",
                                        "description": "Record the actual kernel and GNU components instead of inferring either from a system label.",
                                        "questions": [
                                            {
                                                "text": "Which kernel and versions are paired with the GNU environment under assessment?",
                                                "kind": "definition",
                                                "id": "kernel-user-environment-pairing-q01"
                                            },
                                            {
                                                "text": "Which GNU components justify describing this environment as GNU-based rather than simply an installation of isolated GNU tools?",
                                                "kind": "boundary",
                                                "id": "kernel-user-environment-pairing-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "toolchain-library-dependencies",
                                "name": "Toolchain and library dependencies",
                                "description": "Connects GNU compilers, binary tools, libraries, shells, and utilities to the workload they must support.",
                                "findings": [
                                    {
                                        "id": "compatible-component-set",
                                        "name": "Compatible component set",
                                        "description": "Capture the architecture, interfaces, and dependency constraints needed for the selected GNU component combination.",
                                        "questions": [
                                            {
                                                "text": "Which compiler, binary tools, C library, and shell releases does the intended build or workload require?",
                                                "kind": "definition",
                                                "id": "compatible-component-set-q01"
                                            },
                                            {
                                                "text": "What build and execution checks demonstrate compatibility on the target architecture and ABI?",
                                                "kind": "measurement",
                                                "id": "compatible-component-set-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "gnu-release-and-maintenance",
                        "name": "GNU release and maintenance",
                        "description": "Tracks GNU artifacts from upstream releases through downstream packaging and operational use.",
                        "rationale": "A GNU package name does not identify the exact code running, its modifications, or the maintainer responsible for a defect.",
                        "layers": [
                            {
                                "id": "upstream-downstream-lineage",
                                "name": "Upstream and downstream lineage",
                                "description": "Establishes the relationship between a GNU release and the artifact being assessed.",
                                "findings": [
                                    {
                                        "id": "artifact-origin-and-modifications",
                                        "name": "Artifact origin and modifications",
                                        "description": "Link source and binary artifacts to the GNU upstream release, packaging process, and any applied patches.",
                                        "questions": [
                                            {
                                                "text": "Which upstream GNU release and source location underlie this installed or proposed artifact?",
                                                "kind": "provenance",
                                                "id": "artifact-origin-and-modifications-q01"
                                            },
                                            {
                                                "text": "Which distributor or local patches change its behavior, and what available evidence verifies the artifact's origin?",
                                                "kind": "provenance",
                                                "id": "artifact-origin-and-modifications-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "package-level-operability",
                                "name": "Package-level operability",
                                "description": "Assesses readiness and maintenance at the relevant GNU package and distribution boundaries.",
                                "findings": [
                                    {
                                        "id": "gnu-component-change-decision",
                                        "name": "GNU component change decision",
                                        "description": "Connect a proposed update, rebuild, or replacement to dependency impacts and responsibility for support.",
                                        "questions": [
                                            {
                                                "text": "Which workload checks must pass after changing this GNU library, compiler, shell, or utility?",
                                                "kind": "measurement",
                                                "id": "gnu-component-change-decision-q01"
                                            },
                                            {
                                                "text": "Should a failure be investigated by the upstream GNU package maintainers, the distributor, or the maintainers of an interacting component?",
                                                "kind": "action",
                                                "id": "gnu-component-change-decision-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "gnu-freedoms-and-distribution",
                        "name": "GNU freedoms and distribution",
                        "description": "Connects GNU's free-software purpose to evidence about specific artifacts and proposed actions.",
                        "rationale": "The GNU name expresses a software-freedom commitment but does not replace component-level examination of licenses, exceptions, and distribution materials.",
                        "layers": [
                            {
                                "id": "component-permissions",
                                "name": "Component permissions",
                                "description": "Identifies the terms governing each relevant GNU artifact and its included material.",
                                "findings": [
                                    {
                                        "id": "applicable-license-evidence",
                                        "name": "Applicable license evidence",
                                        "description": "Record actual license texts and notices rather than inferring uniform terms from GNU membership.",
                                        "questions": [
                                            {
                                                "text": "Which license versions, exceptions, and notices apply to the selected GNU component and included files?",
                                                "kind": "provenance",
                                                "id": "applicable-license-evidence-q01"
                                            },
                                            {
                                                "text": "Do bundled documentation, libraries, generated output, or external components require separate treatment?",
                                                "kind": "boundary",
                                                "id": "applicable-license-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "action-specific-materials",
                                "name": "Action-specific materials",
                                "description": "Determines what evidence and accompanying materials a proposed software action requires.",
                                "findings": [
                                    {
                                        "id": "modification-and-redistribution-readiness",
                                        "name": "Modification and redistribution readiness",
                                        "description": "Evaluate the intended action against verified component terms and the available source, notices, and build materials.",
                                        "questions": [
                                            {
                                                "text": "Is the proposed action execution, private modification, source distribution, binary distribution, or distribution of a combined work?",
                                                "kind": "action",
                                                "id": "modification-and-redistribution-readiness-q01"
                                            },
                                            {
                                                "text": "Under the verified applicable terms, which source materials, notices, offers, or other accompanying information must be prepared for that action?",
                                                "kind": "action",
                                                "id": "modification-and-redistribution-readiness-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": [
                                            "No sense is recorded. This response assumes GNU denotes the operating system; the PHY.OBJ domain assignment does not fit that interpretation and should be checked.",
                                            "GNU, the GNU Project and individual GNU packages should not be treated as interchangeable registry concepts.",
                                            "Licenses, compatibility claims and security properties must be checked for the particular component and version; these statements are recalled knowledge, not researched findings."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of GNU this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-standards-and-regulation",
                                        "name": "Standards and regulation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "GNU General Public License (GPL), published by the Free Software Foundation: governs redistribution and modification of many GNU components.",
                                            "GNU Lesser General Public License (LGPL), published by the Free Software Foundation: used by some GNU libraries.",
                                            "GNU software has component-specific licenses; no single license applies uniformly to the entire system."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of GNU 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": [
                                            "Providing compilers, libraries, shells and command-line utilities for GNU/Linux systems.",
                                            "Supporting software development through tools such as GCC, GNU Make and GDB.",
                                            "Providing a free-software Unix-like computing environment.",
                                            "Running a GNU system with the GNU Hurd."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of GNU 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": [
                                            "Vulnerabilities in individual components can compromise systems using them.",
                                            "Incompatible library or tool versions can prevent applications from building or running.",
                                            "Incorrectly used administrative and file-processing commands can destroy data.",
                                            "Redistribution without satisfying the applicable license conditions can infringe copyright."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of GNU 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": "GNU Project",
                                                "difference": "The project is the organized effort developing GNU; GNU is the operating system it develops."
                                            },
                                            {
                                                "name": "Linux",
                                                "difference": "Linux is a kernel; GNU supplies an operating-system environment that can be combined with that kernel."
                                            },
                                            {
                                                "name": "GNU/Linux",
                                                "difference": "GNU/Linux specifically combines GNU components with the Linux kernel."
                                            },
                                            {
                                                "name": "GNU Hurd",
                                                "difference": "GNU Hurd is GNU's collection of operating-system servers running on a microkernel, rather than the complete GNU system."
                                            },
                                            {
                                                "name": "Unix",
                                                "difference": "GNU was developed as a free Unix-compatible system; compatibility does not establish UNIX certification."
                                            },
                                            {
                                                "name": "gnu",
                                                "difference": "The lowercase common name denotes a wildebeest, an antelope; uppercase GNU conventionally denotes the software system."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of GNU this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does the originating registry record identify the GNU software undertaking, or does the physical-object classification indicate another intended sense?",
                "Does an existing Vercy world model already cover GNU, requiring this registry entry to link to that publication?",
                "Should this entry's authoritative scope centre on the GNU operating system or the broader GNU Project and software collection?",
                "Which authoritative sources establish current GNU package membership and supported system compositions?",
                "What evidence threshold should distinguish a GNU-based environment from an unrelated system containing a few GNU tools?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 9,
                "findings": 13,
                "questions": 21
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "unclassified",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a GNU, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an agent to identify GNU software systems and components, assess their composition and freedom-related requirements, and choose appropriate installation, use, modification, or redistribution actions.",
            "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: GNU/Hurd.",
                "1 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 83 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 GNU, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "matter you can touch",
            "physicalCharacter": [
                "Mobility varies between examples.",
                "Does nothing on its own; everything it does, something else did to it.",
                "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing."
            ],
            "whatCanBeDoneWithIt": [
                "observe it, measure it, record its state"
            ],
            "howItIsRecognised": [
                "Recognised by form and material. The registry holds no appearance data, so what a GNU looks like has to come from research."
            ],
            "relatedModels": [
                {
                    "relation": "covers",
                    "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.",
                    "targets": [
                        "GNU/Hurd"
                    ]
                }
            ],
            "standing": "Described in 83 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 1 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 GNU from another, and a GNU 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 GNU, 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 GNU, 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 GNU 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 GNU, 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 GNU, 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 GNU 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 GNU 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 GNU, 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 GNU, 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 GNU 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 GNU from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a GNU, 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 GNU, 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 GNU 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 GNU 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 GNU, 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 GNU, 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 GNU 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 GNU is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a GNU, 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 GNU, 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 GNU 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 GNU is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a GNU, 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 GNU, 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 GNU 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 GNU 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 GNU is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a GNU, 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 GNU, 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 GNU 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 GNU 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 GNU, 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 GNU, 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 GNU 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 GNU 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 GNU between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a GNU, 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 GNU, 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 GNU 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 GNU, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a GNU 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 GNU, 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 GNU, 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 GNU is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "use-and-operation",
                        "name": "Use and operation",
                        "description": "What can be done with a GNU and what it takes to do it.",
                        "rationale": "An agent that can recognise a thing but not act on it has only half a model.",
                        "layers": [
                            {
                                "id": "intended-use",
                                "name": "Intended use and function",
                                "description": "What a GNU is for, and what it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-and-purpose",
                                        "name": "Function, purpose and misuse",
                                        "description": "The function a GNU performs and the uses that fall outside it.",
                                        "questions": [
                                            {
                                                "id": "function-and-purpose-q01",
                                                "text": "What identifies and describes the use of a GNU, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q02",
                                                "text": "Who or what asserted this about the use of a GNU, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q03",
                                                "text": "What may an agent decide or do once the use of a GNU is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "handling-and-procedure",
                                "name": "Handling and procedure",
                                "description": "The steps, skills and tools involved in using a GNU.",
                                "findings": [
                                    {
                                        "id": "procedures-and-skills",
                                        "name": "Procedures, skills and required tools",
                                        "description": "What an agent needs before it can act on a GNU at all.",
                                        "questions": [
                                            {
                                                "id": "procedures-and-skills-q01",
                                                "text": "What identifies and describes handling a GNU, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q02",
                                                "text": "Who or what asserted this about handling a GNU, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q03",
                                                "text": "What may an agent decide or do once handling a GNU is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a GNU 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 GNU and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a GNU, 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 GNU, 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 GNU 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 GNU is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a GNU, 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 GNU, 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 GNU is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 6,
                "layers": 13,
                "findings": 15,
                "questions": 45
            }
        }
    }
}