{"id": "c1261", "title": "C1261 — Explain the950 plus-or-minus300 presentation", "filename": "C1261.md", "role": "Research action", "step": 1261, "sha256": "1cfcac4c049fb82059776a59c0aee36064621b1f71e074eaef1ff96b3b2331b1", "bytes": 1209, "origins": ["C480–C1634/Research_Cycles/C1132_C1431_Recovered/journal.json#C1261"], "download": "/sources/1cfcac4c049fb82059776a59c0aee36064621b1f71e074eaef1ff96b3b2331b1.md", "format": "md", "derived": true, "tags": ["Regular"], "excerpt": "What additional source content does the sum-and-difference display contribute?", "content": "# C1261 — Explain the950 plus-or-minus300 presentation\n\n## Question\n\nWhat additional source content does the sum-and-difference display contribute?\n\n## Inputs\n\n```json\n{}\n```\n\n## Sources\n\n```json\n[\n  \"C1254\",\n  \"C1260\",\n  \"Strategy §4.2\"\n]\n```\n\n## Opened utc\n\n2026-09-28T05:46:47.657744+00:00\n\n## Results\n\n```json\n{\n  \"sum_difference\": {\n    \"path\": \"model/regular_kernel_sum_difference_scope.json\",\n    \"sha256\": \"54fafdd8b71ac0f1f88ddad4d8c43dd2683e1a7f29634dd9fef272077fe4f235\",\n    \"bytes\": 394\n  },\n  \"midpoint\": 950,\n  \"halfwidth\": 300\n}\n```\n\n## Finding\n\nThe sameheadpair is950±300, with midpoint19u/2 andhalfwidth3u. Its equality toNoah’s950-year life is a source-role comparison; rewriting thepair thisway does not explain or replace thelocatedcenturychanges.\n\n## Reassessment\n\nIntegrate thecurrentSP countingmechanism into thekernel comparisonwithoutforcing itintotheLXX formula.\n\n## Checks\n\n```json\n{\n  \"mid950\": true,\n  \"half300\": true,\n  \"reconstruct\": true\n}\n```\n\n## Closed utc\n\n2026-09-28T05:46:47.658839+00:00\n\n## Record provenance\n\nExact record hash: `3da77f0a9678c956cf650c363eac249f929005fe3e628e4235e6ccb9712da828`\n\nSource journal: `Research_Cycles/C1132_C1431_Recovered/journal.json`", "journalDownload": "/sources/6adb632ce171623c2bce60d7ed58ae319ccb379cf76b751c0a477c1742fd348c.json", "evidenceLinks": [{"id": "d-54fafdd8b71ac0f1", "title": "model/regular_kernel_sum_difference_scope.json"}]}