s491.py

from research import *
d={'Lamech':-24,'Arphaxad':27,'Cainan':460,'Shelah':27,'Eber':40,'Peleg':100,'Reu':100,'Serug':100,'Nahor':60}
s=begin(491,'Close the cross-tradition source explanation','Can every unit of LXX’s cumulative890 difference be traced to supplied lifespan rows?',d,['File18 §§2.2,4.1–4.2,6D; corrected339/339/330 triplet'])
finish(s,{'row_deltas':d,'postFlood_without_Cainan':sum(d.values())-d['Lamech']-d['Cainan'],'all_deltas':sum(d.values()),'endpoint_check':14894-14004},
 'The total is454+460−24=890. Alongside SP’s−608, this completes a source-row explanation of why the regular and cumulative families move differently. A common projection grammar is supported; a common12026 endpoint is not.',
 'Return to the MT rounded/actual interface and derive its residual conservation from rows and endpoint selections.',{'total':sum(d.values())==890,'postFlood':sum(d.values())+24-460==454,'regular_independent':600+780==1380})