Editorial and source review of the Babylonian chapter and cumulative Noah extension

Reviewed September 29, 2026 UTC:

• prep/Babylonian_chapter.md
• agents/cumulative_noah_extension.md

Result: no material mathematical or source-role correction required. Both pieces keep the explanation centered on connected paths and local operations rather than on boundary bookkeeping.

Babylonian chapter

The two 7700 edges, fixed-restoration 9900/12600 comparison, 7700+4900 and 7770+4830 partitions, anchored 4830→4900 conversions, Covenant chain and 70-unit coordinates all agree with their stated endpoints and source states.

The 5366 label is supported. File29's §0.2 date-identity register explicitly calls it the “File_25 LXX Year-6 / 2Cainan-removed Decimal Invariance coordinate,” distinguished from native Year-6 5496, historical restoration 536 and ordinary Creation endpoints. File29 §6.4 reproduces the Cainan/Terah sequence 5366→5426→5496→5556 and the 5366→4456 comparison. Thus 5496−130=5366 is legitimate as the named comparative target used here. The chapter correctly says that the native Cainan-ON Rounded source generating 13136 remains unchanged.

The authority hierarchy is also retained: File25 supplies the Decimal Invariance comparison inherited by File29; File29 supplies the 7/13 interpretation and executable corroborating coordinates. The new chapter cites File29's state register and §6.4 and does not present 5366 as a newly generated Rounded Creation head. No further qualification is necessary in the main prose.

File29 §6.4 explicitly retains 606→536=70. The chapter does not import the rejected 606→586=70 reading or confuse 5486 Rounded Creation with Year-6 5496. Its distinct 2736→1446→586=1290+860 comparison is valid and is not presented as the 70-year exile interval.

The 770+490 / 777+483 scalar forms and 2730=7.5×364 are correctly treated as inherited. The contribution is their new placement on named inverse/source paths. The chapter also correctly distinguishes a changing final radius from a fixed-total moving cut.

Cumulative Noah extension

The Noah nodes 6386/7296/6266 follow the serial 950+600 lifespan construction from the declared cumulative Flood seams. The explicit MT source and derived LXX/SP status are stated correctly. The accepted SP Fall adjustment acts at the upper head, leaving the admitted lower nodes intact.

The seven named partition definitions are unambiguous. The common 4320 difference follows exactly from reversing the combined 1550 versus the separated 600 and 950. The N=FN statement is correctly confined to the three source-appointed lower legs. The result does not generalize decimal additivity.

The MT/LXX nine-life prefix comparison is source-accurate: the first eight lifespan inputs agree; retained Lamech 777/753 round to 775/755, producing 7620/7600. Their different placeholder registers explain 2670/6700. SP's prefix is 7135−5=7130 under the accepted Fall choice. The source-row explanation therefore accounts for the differing inverse outputs without a new fitted operator.

The 13636 equality correctly distinguishes Conquest-held full internal refinement from Nativity-completed primary LXX Cumulative construction. The SP 4320 refinement loss is correctly used to delimit the earlier intact 600+8080 upper-branch result. Existing MT FN and FS outputs are marked inherited; the comparative law is marked new.

For the reader integration, the common 4320 law and LXX 13636 equality are the appropriate emphasis, as the draft itself recommends. The full seven-row table can remain in the technical evidence if the main chapter needs to stay compact; this is an editorial placement judgment, not a required correction.

Portable evidence added

Copied without modifying root bindings:

The File52a excerpt preserves §11, including both MT Shem- and Noah-centered secondary constructions and the original archive-member hash. File53 is the complete attached source edition, including §19's SP cumulative Shem/Flood envelopes. Root may now bind these exact copied payloads.