# C801 — Close the BJ paths at their common completion

## Question

Does the surface adjustment repartition a retained whole span?

## Inputs

```json
{
  "Conquest_BC": 1406,
  "Conquest_AM": 2451
}
```

## Sources

```json
[
  "C799–800; File20 Conquest anchor"
]
```

## Opened utc

2026-09-28T02:07:25.769274+00:00

## Results

```json
{
  "reconstructed_intervals": [
    100,
    60,
    130,
    285
  ],
  "surface_intervals": [
    111,
    59,
    125,
    280
  ],
  "changes": [
    11,
    -1,
    -5,
    -5
  ],
  "retained_total": 575
}
```

## Finding

Both complete paths retain575 years. The surface path redistributes them by+11,−1,−5,−5; its Egypt→Conquest280 is one component of a conserved whole, not a global70-year conversion.

## Reassessment

Extend through Jacob’s retained terminal17 years.

## Checks

```json
{
  "total575": true,
  "zero_sum": true,
  "surface280": true
}
```

## Closed utc

2026-09-28T02:07:25.769566+00:00

## Record provenance

Exact record hash: `f52e1c5d16ad895858298b9fb8a4db668378e3058eede4b67c0d3e47701f1c97`

Source journal: `Research_Cycles/C0732_C0831/journal.json`