{"id": "c909", "title": "C909 — Justify the retained information by complete-object witnesses", "filename": "C909.md", "role": "Research action", "step": 909, "sha256": "79d1187aa1e10f298d769504c1e4ebb87a6d26efe0d7cf83b14586d05ad4b07e", "bytes": 1123, "origins": ["C480–C1634/Research_Cycles/C0832_C0931/journal.json#C909"], "download": "/sources/79d1187aa1e10f298d769504c1e4ebb87a6d26efe0d7cf83b14586d05ad4b07e.md", "format": "md", "derived": true, "tags": [], "excerpt": "Why does each additional source register belong in the model?", "content": "# C909 — Justify the retained information by complete-object witnesses\n\n## Question\n\nWhy does each additional source register belong in the model?\n\n## Inputs\n\n```json\n{}\n```\n\n## Sources\n\n```json\n[\n  \"C836,840,844–848,857,861,879,882,894,898\"\n]\n```\n\n## Opened utc\n\n2026-09-28T02:56:37.536069+00:00\n\n## Results\n\n```json\n{\n  \"necessity_evidence\": {\n    \"path\": \"model/finite_register_necessity.json\",\n    \"sha256\": \"20d499d369f930b8c000392f332ef9d557d78b415487f95aa813cfb7cb8c4026\",\n    \"bytes\": 1092\n  }\n}\n```\n\n## Finding\n\nEach retained information type has a concrete witness showing what its removal loses. This supports a compact grammar over the tested families; it does not prove a unique or globally minimal model.\n\n## Reassessment\n\nState the unified source-object schema and the distinct operations it admits.\n\n## Checks\n\n```json\n{\n  \"seven_witnesses\": true,\n  \"no_duplicate_register\": true\n}\n```\n\n## Closed utc\n\n2026-09-28T02:56:37.536456+00:00\n\n## Record provenance\n\nExact record hash: `d56d5d29769212c95d586c5df4ba2d7d61785ca7de2e2ede0fa7682e6d8e4163`\n\nSource journal: `Research_Cycles/C0832_C0931/journal.json`", "journalDownload": "/sources/6a37be4e218f9f467cbde5e9db3723ce9c79dc78cc97d1a289422b96cb9971e0.json", "evidenceLinks": [{"id": "d-20d499d369f930b8", "title": "model/finite_register_necessity.json"}]}