# C1156 — Compare regular and cumulative parameter visibility

## Question

Which parts of the shared source change are invisible in each chronological measurement?

## Inputs

```json
{}
```

## Sources

```json
[
  "C1154",
  "Strategy §§3.1–3.2"
]
```

## Opened utc

2026-09-28T05:06:33.814096+00:00

## Results

```json
{
  "projection_visibility": {
    "path": "model/postflood_projection_visibility.json",
    "sha256": "817997b009590c22ea121ef6263e5a8436ee996461cd9bcca741b2ace15aa4c8",
    "bytes": 325
  },
  "ranks": [
    1,
    1,
    3
  ]
}
```

## Finding

The same source dictionary has different visible information in each mode: regular ages see only100, SP life differences only60, and the full LXX life field sees all three amplitudes. This explains aligned births alongside different cumulative structures.

## Reassessment

Determine what is lost when the complete lifespan fields are reduced to their outer totals.

## Checks

```json
{
  "regular_rank1": true,
  "SP_rank1": true,
  "LXX_rank3": true
}
```

## Closed utc

2026-09-28T05:06:33.815633+00:00

## Record provenance

Exact record hash: `4e9e9de42a5705d07cf11386ff8e4107dc9d1f0be22400d62d6c8f982abb0702`

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