{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T06:14:37Z",
    "providers": [
      "Claude"
    ],
    "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify",
    "pass": 2,
    "wave": 2,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T00:10:00Z",
      "ingestedAt": "2026-10-05T20:53:16+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "revisions": [
      {
        "at": "2026-10-08T18:48:08+00:00",
        "engine": "codex",
        "fields": [
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          "definition",
          "distinguishing_features",
          "ethics",
          "purpose",
          "visual_identification"
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    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-08T18:54:38+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "3 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q2325497",
    "registryId": "vr.tr.stability",
    "name": "stability",
    "version": "0.2.0-wave.2",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "XCT.QLT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q2325497/",
  "model": {
    "registry_id": "vr.tr.stability",
    "name": "stability",
    "purpose": "Let an agent explain the return of physical systems to equilibrium or steady states after disturbance, describe applicable stability criteria and evidence, and support learning and modelling questions.",
    "definition": "Stability in the supplied sense is the tendency of a physical system to return to its equilibrium or steady state after disturbance; remaining nearby without returning is a distinct stability criterion, and thermodynamic stability depends on the applicable constraints and thermodynamic potential rather than universally requiring lowest energy.",
    "what_it_is_for": "Persistence or return after disturbance.",
    "affordances": [
      "explain the concept across fields",
      "describe analysis and measurement",
      "support modelling questions",
      "support learning"
    ],
    "distinguishing_features": [
      "The property concerns a physical system's response to disturbance from an equilibrium or steady state.",
      "Returning to the reference state is distinct from remaining nearby without returning.",
      "Mathematical criteria depend on the physical model, constraints and disturbances considered.",
      "Stability can be a design goal for physical systems."
    ],
    "appearance": "Not physical; a property.",
    "visual_identification": [
      "Time-response plots can show whether a disturbed physical system returns toward its equilibrium or steady state.",
      "Phase-space diagrams can represent trajectories approaching a reference state.",
      "Equilibrium is a reference state, while stability describes the system's response to disturbance."
    ],
    "physical_properties": [],
    "families_and_kinds": [
      "mechanical and structural stability",
      "stability in control theory and linear stability",
      "thermodynamic and chemical stability",
      "colloidal, sedimentation and foam stability",
      "ecological and social stability"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "robustness",
        "why": "category"
      },
      {
        "relation": "is related to",
        "target": "damping ratio",
        "why": "a parameter governing stability of oscillating systems"
      },
      {
        "relation": "is related to",
        "target": "symbiosis",
        "why": "stable relationships in ecology"
      },
      {
        "relation": "is related to",
        "target": "social safety net",
        "why": "programmes supporting family and social stability"
      }
    ],
    "identifiers": [],
    "standards_and_regulation": [
      "Engineering stability criteria in design codes",
      "Chemical stability testing standards",
      "No regulation of the general concept"
    ],
    "failure_modes_and_hazards": [
      "Conflating senses across fields",
      "Assuming stability without analysis",
      "Instability leading to collapse or runaway"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Explain stability in physical systems using criteria appropriate to their dynamics and constraints.",
        "Check a model or system for stability within the user's authorization."
      ],
      "must_not": [
        "Certify a structure, vehicle or control system as stable without proper analysis by a competent engineer.",
        "Confuse the different technical senses of stability in safety-related work.",
        "Present a system's past stability as a guarantee of future behaviour."
      ],
      "requires_human": [
        "Accepting a stability analysis for a design that people's safety depends on requires human oversight."
      ]
    },
    "ethics": {
      "considerations": [
        "Wrong stability claims about ships, structures or reactors have killed people."
      ],
      "affected_parties": [
        "Users of engineered systems are affected.",
        "People near structures and machines are affected."
      ]
    },
    "owners": {
      "steward": "Nobody: a property; engineers answer for stability claims about their systems.",
      "master_systems": []
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q2325497: stability",
      "url": "https://www.wikidata.org/wiki/Q2325497",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "found-2",
      "title": "Stability theory",
      "url": "https://en.wikipedia.org/wiki/Stability_theory",
      "url_status": "live",
      "checked_by": "http 200",
      "what_it_supports": "The response of a system's motion or equilibrium to disturbances."
    },
    {
      "id": "found-3",
      "title": "Lyapunov stability",
      "url": "https://en.wikipedia.org/wiki/Lyapunov_stability",
      "url_status": "live",
      "checked_by": "http 200",
      "what_it_supports": "Formal equilibrium stability, including asymptotic stability in which a disturbed system returns toward equilibrium."
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "understand",
        "name": "Understand",
        "description": "What stability is.",
        "rationale": "Concepts.",
        "layers": [
          {
            "id": "concept",
            "name": "Concept",
            "description": "Concept and senses.",
            "findings": [
              {
                "id": "concept-finding",
                "name": "Concept",
                "description": "Concept.",
                "questions": [
                  {
                    "text": "What is stability in general, and how do mechanical, thermodynamic, chemical, colloidal, ecological and social senses differ?",
                    "kind": "definition"
                  },
                  {
                    "text": "Which sense is meant?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "criteria",
            "name": "Criteria",
            "description": "Criteria.",
            "findings": [
              {
                "id": "criteria-finding",
                "name": "Criteria",
                "description": "Criteria.",
                "questions": [
                  {
                    "text": "How is stability defined mathematically, including linear stability and stability of equilibria?",
                    "kind": "definition"
                  },
                  {
                    "text": "Which entry fits dynamical systems?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "analyse",
        "name": "Analyse",
        "description": "Analysis and measurement.",
        "rationale": "Practice.",
        "layers": [
          {
            "id": "analyse",
            "name": "Analyse",
            "description": "Analysing a system.",
            "findings": [
              {
                "id": "analyse-finding",
                "name": "Analyse",
                "description": "Analysis.",
                "questions": [
                  {
                    "text": "How can the stability of this system be analysed or tested?",
                    "kind": "action"
                  },
                  {
                    "text": "Which entry fits control theory or structural analysis?",
                    "kind": "action"
                  }
                ]
              }
            ]
          },
          {
            "id": "measure",
            "name": "Measure",
            "description": "Measuring stability.",
            "findings": [
              {
                "id": "measure-finding",
                "name": "Measure",
                "description": "Measurement.",
                "questions": [
                  {
                    "text": "How are chemical, colloidal and foam stability measured experimentally?",
                    "kind": "measurement"
                  },
                  {
                    "text": "Which standards apply?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "apply",
        "name": "Apply",
        "description": "Applications.",
        "rationale": "Engineering.",
        "layers": [
          {
            "id": "design",
            "name": "Design",
            "description": "Designing for stability.",
            "findings": [
              {
                "id": "design-finding",
                "name": "Design",
                "description": "Design.",
                "questions": [
                  {
                    "text": "How are structures, vehicles, control systems and products designed to be stable?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits a specific application?",
                    "kind": "action"
                  }
                ]
              }
            ]
          },
          {
            "id": "systems",
            "name": "Systems",
            "description": "Ecological and social systems.",
            "findings": [
              {
                "id": "systems-finding",
                "name": "Systems",
                "description": "Systems.",
                "questions": [
                  {
                    "text": "How do ecologists and social scientists study stability of communities and institutions, with positions attributed?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which findings are contested?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "learn",
        "name": "Learn",
        "description": "History and teaching.",
        "rationale": "Education.",
        "layers": [
          {
            "id": "history",
            "name": "History",
            "description": "History.",
            "findings": [
              {
                "id": "history-finding",
                "name": "History",
                "description": "History.",
                "questions": [
                  {
                    "text": "How did the mathematical theory of stability develop from Lagrange and Lyapunov onward?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which references are standard?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "teach",
            "name": "Teach",
            "description": "Teaching.",
            "findings": [
              {
                "id": "teach-finding",
                "name": "Teach",
                "description": "Teaching.",
                "questions": [
                  {
                    "text": "How can stability be taught with demonstrations?",
                    "kind": "action"
                  },
                  {
                    "text": "Which misconceptions arise?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should each specialised stability be a separate entry?",
    "How should textbooks be linked?",
    "How should standards be linked?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}