# C769 — Measure the effect of retained subdivisions

## Question

Does whole-chain cancellation justify rounding arbitrary subpath totals?

## Inputs

```json
{}
```

## Sources

```json
[
  "File51a cumulative Enoch and Terah boundaries"
]
```

## Opened utc

2026-09-28T01:58:29.743865+00:00

## Results

```json
{
  "subpath": "Enoch→Terah",
  "actual_span": 5852,
  "row_rounded_span": 5860,
  "once_rounded_total": 5850,
  "defect": 10,
  "field_span_change": 8
}
```

## Finding

The source subpath5852 becomes5860 by row rounding but5850 by rounding its total. Retained subdivision is part of the construction, even when the full12600 total cancels.

## Reassessment

State the minimal recoverable object linking Actual and Rounded.

## Checks

```json
{
  "defect": true,
  "residual_prediction": true
}
```

## Closed utc

2026-09-28T01:58:29.744648+00:00

## Record provenance

Exact record hash: `012a304a496a71818936a25919377e3dd33dff0540daacb954743f5a9e41ef62`

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