{"id": "c486", "title": "C486 — SP local reconstruction", "filename": "C486.md", "role": "Research action", "step": 486, "sha256": "9f8a825740e4fe443aae15f9032268d0ac07afb977cd4270fbd82f870fea9b56", "bytes": 1423, "origins": ["C480–C1634/Research_Cycles/C0482_C0531/journal.json#C486"], "download": "/sources/9f8a825740e4fe443aae15f9032268d0ac07afb977cd4270fbd82f870fea9b56.md", "format": "md", "derived": true, "tags": ["Regular", "Cumulative"], "excerpt": "Does the same source-row accounting explain SP endpoint movement and its boundary exception?", "content": "# C486 — SP local reconstruction\n\n## Question\n\nDoes the same source-row accounting explain SP endpoint movement and its boundary exception?\n\n## Inputs\n\n```json\n{\n  \"begetting_deltas\": [\n    -100,\n    -120,\n    -129\n  ],\n  \"primary_completed_year\": -1,\n  \"lifespan_deltas\": [\n    -115,\n    -249,\n    -124,\n    -60,\n    -60\n  ],\n  \"downstream_regular_shift\": 650\n}\n```\n\n## Sources\n\n```json\n[\n  \"File18 §§2.1.3,3.1,3.2; lines1474–1488,1532–1534\"\n]\n```\n\n## Opened utc\n\n2026-09-27T22:38:56.215706+00:00\n\n## Results\n\n```json\n{\n  \"Adam_Noah_MT\": 1056,\n  \"Adam_Noah_SP_primary\": 706,\n  \"delta_regular_internal\": -350,\n  \"delta_regular_Creation\": 300,\n  \"delta_cumulative\": -608,\n  \"SP_Lamech\": \"53rd year ->52 completed units;653 lifespan is inclusive\"\n}\n```\n\n## Finding\n\nSP uses the same two projections with different local data. Its −350 pre-Noah change plus +650 downstream placement gives +300 regular Creation, while five lifespan changes total−608 cumulatively. The inclusive Lamech convention must remain explicit.\n\n## Reassessment\n\nExpress this mechanism as a small linear source-row rule, with boundary terms kept separate.\n\n## Checks\n\n```json\n{\n  \"regular\": true,\n  \"cumulative\": true\n}\n```\n\n## Closed utc\n\n2026-09-27T22:38:56.215891+00:00\n\n## Record provenance\n\nExact record hash: `96196b18b7ce0e7439090355632d626dfe6d82abae5ef9f28f24ecb2eb925993`\n\nSource journal: `Research_Cycles/C0482_C0531/journal.json`", "journalDownload": "/sources/6eaeccad4734eff2f6ac20ba847967877b944f9758c53c712ac8b5be2ddf61eb.json", "evidenceLinks": [{"id": "d-68301ab760bfbe2e", "title": "File 18"}]}