# C1217 — Locate the row where the rounding carry itself changes

## Question

Does rounded lifespan change always equal rounded begetting plus remaining-year changes?

## Inputs

```json
{}
```

## Sources

```json
[
  "C1214",
  "C1199"
]
```

## Opened utc

2026-09-28T05:29:14.399115+00:00

## Results

```json
{
  "carry_change": {
    "path": "model/whole_genealogy_rounded_carry_change.json",
    "sha256": "9e64605b3c1b687ca5656ad9eb06a5cfe846fd29f54ea82de3a48bd97031fdc8",
    "bytes": 1422
  },
  "nonzero": [
    {
      "name": "Lamech",
      "carry_change": 5
    }
  ]
}
```

## Finding

Lamech alone changes the carry, by+5. Its Rounded lifespan adjustment is−20, while its rounded remaining-year adjustment is−25; keeping the carry reconciles both constructions.

## Reassessment

Summarize the whole-row route into Rounded chronology and select the next larger family connection.

## Checks

```json
{
  "onlyLamech": true,
  "sum5": true
}
```

## Closed utc

2026-09-28T05:29:14.399680+00:00

## Record provenance

Exact record hash: `e172278e3603cd66a7bf10fdcbb9d2a8f3fc422b899c92b917e2732e3190c525`

Source journal: `Research_Cycles/C1132_C1431_Recovered/journal.json`