{"id": "c905", "title": "C905 — Separate common topology from source-specific measurement", "filename": "C905.md", "role": "Research action", "step": 905, "sha256": "ec7be3221920b4968353da47c34b2923958074e62390d37c33518f29d763d39d", "bytes": 1211, "origins": ["C480–C1634/Research_Cycles/C0832_C0931/journal.json#C905"], "download": "/sources/ec7be3221920b4968353da47c34b2923958074e62390d37c33518f29d763d39d.md", "format": "md", "derived": true, "tags": [], "excerpt": "What does the full NT insertion response add to the earlier Cainan comparisons?", "content": "# C905 — Separate common topology from source-specific measurement\n\n## Question\n\nWhat does the full NT insertion response add to the earlier Cainan comparisons?\n\n## Inputs\n\n```json\n{}\n```\n\n## Sources\n\n```json\n[\n  \"C864\",\n  \"C831 insertion and BJ deletion results\"\n]\n```\n\n## Opened utc\n\n2026-09-28T02:55:25.784204+00:00\n\n## Results\n\n```json\n{\n  \"transfer\": {\n    \"path\": \"model/topology_measure_transfer.json\",\n    \"sha256\": \"13776a4ab8d0a07e54ce29312bdf2eda35338b9278b39a4f75b1eb5616ebd907\",\n    \"bytes\": 1698\n  },\n  \"upstream_delta\": -130,\n  \"downstream_delta\": 0\n}\n```\n\n## Finding\n\nThe complete NT/MT field changes by−130 at every common node through Arphaxad and by0 from Shelah onward. This makes the insertion support explicit. The130,460,70 and BJ57 measures retain their source-specific roles even when name bookkeeping aligns.\n\n## Reassessment\n\nGeneralize the retained-biography distinction as a subdivision rule.\n\n## Checks\n\n```json\n{\n  \"support\": true,\n  \"four_roles\": true\n}\n```\n\n## Closed utc\n\n2026-09-28T02:55:25.785485+00:00\n\n## Record provenance\n\nExact record hash: `d61dc9a2affee12b43710c0da765738e1f7d31356015e375dfdab562fcd63337`\n\nSource journal: `Research_Cycles/C0832_C0931/journal.json`", "journalDownload": "/sources/6a37be4e218f9f467cbde5e9db3723ce9c79dc78cc97d1a289422b96cb9971e0.json", "evidenceLinks": [{"id": "d-13776a4ab8d0a07e", "title": "model/topology_measure_transfer.json"}]}