{"id": "c336", "title": "Coherent source-pair lifts of the two-year choices", "filename": "490d_C336_Coherent_Source_Pair_Lifts_20260924.md", "role": "Research action", "step": 336, "sha256": "56349b3c0368c48adfa475bfd6b89b186523d9e7b31e5adf448dcfa198041b06", "bytes": 3914, "origins": ["C01–C479/packets/C336/490d_C336_Coherent_Source_Pair_Lifts_20260924.md"], "download": "/sources/56349b3c0368c48adfa475bfd6b89b186523d9e7b31e5adf448dcfa198041b06.md", "format": "md", "derived": false, "tags": ["Regular", "Cumulative", "Mirror / 529"], "excerpt": "490d C336 — Coherent source-pair lifts of the two-year choices\n\n24 September2026. Step3 of10 in the C334–C343 authorization.\n\nA coherent two-year shift of either complete source pair preserves its original interval. The 1058 and 598/599 readings arise when one endpoint is held from a different profile or Gear. Those ar", "content": "# 490d C336 — Coherent source-pair lifts of the two-year choices\n\n24 September2026. Step3 of10 in the C334–C343 authorization.\n\n**A coherent two-year shift of either complete source pair preserves its original interval. The 1058 and 598/599 readings arise when one endpoint is held from a different profile or Gear.** Those are valid comparisons, but they have a different operation history.\n\nFor each C319 index, the native-ON cumulative Shem/Flood pair and the restored-MT Noah/Flood pair were retrieved from the existing C286 register. The complete upper lifts exist at i3,i4,i5; the i6,i7 failures remain explicit.\n\n| Pair or comparison | Before | After the selected +2 | Reason |\n|---|---:|---:|---|\n| Native-ON cumulative Shem→ON-Flood, both members move | 600 | 600 | Uniform annual-member shift |\n| Native-ON Shem→held OFF-Flood | 1060 | 1058 | Only the ON member is reselected |\n| ON-Flood→held OFF-Flood | 460 | 458 | Same selective reselection |\n| Restored-MT Noah→Flood start, both in the new Gear | 600 | 600 | Coherent regular Gear shift |\n| Old-Gear MT Noah→new-Gear MT Flood start | 600 | 598 | MT Noah is held in the old Gear |\n| Restored-MT Noah→Flood close, both in the new Gear | 601 | 601 | Close is a one-year event boundary |\n| Old-Gear MT Noah→new-Gear MT Flood close | 601 | 599 | Same old/new Gear comparison |\n\nThis identifies exactly why C331's primary 598=490+108 and companion599=491+108 do not redefine Noah's source age at the Flood. Its M remains the same-Gear counterpart of SP Noah, while R belongs to the next MT Gear. If M is moved coherently with R, the source interval remains600 or601. SP Noah and its death can legitimately remain fixed as the other comparison profile.\n\nOn the cumulative side, no cumulative Gear has been introduced. The shifted pair consists of already admitted annual members of the native-ON lifespan register. Comparing its Shem endpoint with an independently held OFF-Flood endpoint produces the1058 side. The source propagation rule alone does not prescribe that mixed-profile selection.\n\nThe best next step is a concise factorization of the two1058 requirements by their source choices. This can state the necessary and sufficient matching conditions without repeating the large endpoint census.\n\n## Verification and limits\n\n29 main checks and 17 frozen-input/predecessor authentication checks passed. A second main replay produced byte-identical DATA/RESULTS. These checks and the source interpretation were performed by the root agent; no new independent-agent review is claimed. All frozen originals and standing controls remain unchanged. Verification counts are not independent-witness counts.\n\nFinite source-pair lift only. Coherent motion and cross-profile reselection are both retained under their own descriptions. No new phase, date, cumulative Gear or prescribed selector.\n\nMirror/529 focus: K=529, E=25/23, P=70/69. Global paired Mirror January AD1; local junction January AD2; no civil year zero. Regular Gears are Noah/Shem/Flood only. SP minus-one person companions remain local to SP Noah/Shem; Flood close is a separate boundary. No upstream/cumulative Gear, new endpoint or phase, fitted anchor, global axis, primer reopening, canonical or graph edit. Capture now; canonize later. Source identity, context, modal binding, generated coordinates and phase ancestry stay distinct.\n\n## Decision after this result\n\n**C337, proposed and unexecuted:** Factor the existing left and right2K conditions into their source selectors. Derive necessary and sufficient conditions within the already frozen cumulative ON/OFF and regular Cainan/Terah/Gear/rail domains; reconcile the factorization with C287 rather than repeating its census.\n\nC336 shows exactly which held partners create each shortened span. A source-labelled factorization can reveal which choices 2K actually determines and which coupling remains additional.\n"}