{
  "id": "point-of-no-return.irreversible",
  "term": "point of no return",
  "sense": "irreversible",
  "pos": "noun",
  "status": "review",
  "level": 11,
  "arena": "general",
  "domain": "emergence",
  "style": "window",
  "definition": "A wall in a parameter's window, beyond which the thing cannot persist even though its parts do.",
  "folk_gloss": null,
  "emergence": {
    "components": [
      "window.range",
      "wall.range-end",
      "parameter.condition",
      "persist.continue",
      "part.relation"
    ],
    "interaction": "The components together establish a threshold in a condition's range where persistence fails despite continuity of parts.",
    "novel_properties": [
      "irreversible threshold",
      "persistence discontinuity",
      "part-whole asymmetry"
    ]
  },
  "examples": [
    {
      "text": "Chernobyl Reactor 4 exceeded thermal limits on April 26, 1986, leading to core disassembly that could not be reversed despite continued fuel rod integrity.",
      "domain": "engineering"
    },
    {
      "text": "The Larsen B ice shelf in Antarctica fractured irreversibly in 2002 after decades of warming, though individual ice crystals remained intact.",
      "domain": "geophysics"
    },
    {
      "text": "The Roman Senate continued debating legal forms in 476 CE while Odovacer deposed the last emperor, marking institutional collapse despite persistent bureaucracy.",
      "domain": "institutions"
    }
  ],
  "relations": [],
  "used_by": [
    "direction.spatial",
    "factor-of-safety.margin",
    "located.spatial",
    "position.spatial"
  ],
  "forms": [
    "point",
    "point's",
    "points"
  ],
  "closed": false,
  "provenance": {
    "author": "retrofit:qwen/qwen3-235b-a22b-2507",
    "date": "2026-07-29",
    "confidence": 0.8,
    "sources": [
      "Sample/hundred-words-six-terms.md"
    ],
    "reconciled": {
      "by": "openrouter:qwen/qwen3-235b-a22b-2507",
      "date": "2026-07-31",
      "changed": "factual",
      "note": "Definition corrected for factual accuracy: 'wall in a parameter's window' was misleading; 'windows.opening' erroneously suggested architectural structure; replaced with correct conceptual components. "
    },
    "restored": {
      "date": "2026-07-31",
      "from": "Sample/hundred-words-six-terms.md",
      "replaced": "A boundary in a parameter's range beyond which a thing cannot persist, even though its parts continue."
    }
  },
  "canonical": "https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-point-of-no-return.irreversible"
}