# Independent review of C890–C900

**PASS. No correction required.** Twenty-six independent source, arithmetic, role, and artifact-binding checks passed. The reproducible calculation is `review_c890_c900.py`; exact results are in `INDEPENDENT_C890_C900.json`.

This review read the completed journal records, the emitted model files and relevant execution scripts, and the supplied File63 §§7.2–7.9 source. It checked all four bound source hashes and all eleven artifact bindings appearing in C890–C900. It did not execute a numbered action, edit the source, or modify the root's records.

| Result | Independent finding |
|---|---|
| C890–891 selection/checkpoint | The frozen packet has the intended four-source scope. C891 correctly describes the59 completed records before its own60th-action close. Old143520 scalar-Key evaluations remain inherited context. |
| C892 six heads | All six source outputs146006,146066,146836,146833,145601,145571 are literal in File63. Each is recovered by M=R+12(C−R)=12C−11R from its typed source pair. |
| C893 response field | Independently calculated changes are60,770,−3,−30. The770 equals840 additional body minus70 target displacement. Both matched−3 and−30 endpoint changes pass through intact. |
| C894 information loss | Body144900 has positions1936/1933; body143520 has positions2081/2051. The body map12(C−R) loses a common translation coordinate. Keeping the target recovers C and M numerically; semantic labels must still be retained. |
| C895 full carrier incidence | Ordered spans11960,12000,12005,12075 arise from pairs(14011,2051),(14006,2006),(14011,2006),(14011,1936). Endpoint changes(−5,−45),(5,0),(0,−70) give40|5|70 and twelvefold480|60|840. |
| C896 hinge |2166−2051=2051−1936=115 equals the full carrier change. The node roles remain regular Abraham, proposed Isaac offering, cumulative Jacob death/Levi birth. This is a comparison of differently typed objects, not a single continuous timeline of the four scalar carriers. |
| C897 terminal branch |144900=900×161; P gives147000=1000×147; E gives157500=900×175. Gains2100 and12600, with output gap10500, have ratio1:6:5. |
| C898 retained biography | The source's147000 body has literal partition146853|147=999×147|147 at2083. Uniform P about1936 would instead map2083 to47958/23=2085+3/23 and the interval147 to3430/23=149+3/23. The displacement is49/23. The retained147 has preimage1449/10. |
| C899 civil squares | The two complete arms both decompose145600 as143520+2080. In the civil coordinate chart the corresponding three nodes differ by+30 throughout, including1BC→AD30. BC+AD−1 is used correctly; no civil year zero is asserted. |
| C900 integration | The summary correctly retains endpoint roles, multiplier12, whole-year cumulative1936, proposed2051, generated-head status, and the distinction between uniform transport and retained subdivision. |

## Source and interpretation controls

File63 §7.7 expressly separates the regular Jacob2006 terminal of12000/12005 from the cumulative1936 terminal of12075. Its alternative regular1929 landing is not substituted into the cumulative macro lift. The lower source pair14008→1933=12075 is printed in §7.3, so the146833 companion has a literal endpoint basis.

The2051 guard is correctly maintained. File63 §7.9 introduces2081 and2051 as author-designated comparison states and says Genesis22 does not state Isaac's age. The model records “proposed Isaac offering at age15”; C896 and C900 repeat this premise. The arithmetic therefore establishes a conditional symmetry, not a source-text date or historical age determination.

Cumulative1936 is the whole-year upper display, distinct from exact1936.5. Its use is explicit in the emitted six-head field, hinge, and module summary.

Only144000 is treated as Revelation's textual total. The144060 and144900 outputs remain derived File63 companions. All six large heads remain generated coordinates rather than new primary chronology anchors. The source-appointed1BC/AD30 external comparison does not replace the project's6BC nativity or preferredAD33 Passion.

C898 is a useful positive distinction rather than an arithmetic conflict with File63. The source enlarges an outer span and identifies the retained historical147-year biography as its terminal thousandth. A uniform dilation of every internal point would produce a different interior boundary. The current record describes these two constructions accurately.

The six-head reconstruction and its response field are dependent consequences of the source multiplier and endpoint selections. They add explanatory compression; they are not six independent historical discoveries, a statistical tally, or a proof of scribal or providential causation. The completed work retains that limit.