# C484 — Why the anchor shifts

## Question

Can source differences explain the weighted-anchor failures without adjustable parameters?

## Inputs

```json
{
  "LXX": {
    "dC": 890,
    "dR": 1380,
    "regular_parts": [
      600,
      780
    ],
    "cumulative_parts": [
      430,
      460
    ]
  },
  "SP": {
    "dC": -608,
    "dR": 300,
    "regular_parts": [
      -350,
      650
    ],
    "cumulative_parts": [
      -115,
      -249,
      -124,
      -60,
      -60
    ]
  }
}
```

## Sources

```json
[
  "File18 §§2.1.3,3.1,4.1,6B–6D",
  "Strategy §§3.1–3.2"
]
```

## Opened utc

2026-09-27T22:38:12.777807+00:00

## Results

```json
{
  "LXX": {
    "regular_total": 1380,
    "cumulative_total": 890,
    "anchor_shift": 988
  },
  "SP": {
    "regular_total": 300,
    "cumulative_total": -608,
    "anchor_shift": "-2132/5"
  }
}
```

## Finding

Regular and cumulative differences have different causes. LXX centenary repartitions move regular dates while preserving lifespans; SP shortens selected lives. The weighted failures are generated by these source changes.

## Reassessment

Reconstruct the ordered local begetting and lifespan differences to see the shared mechanism directly.

## Checks

```json
{
  "LXX": true,
  "SP": true
}
```

## Closed utc

2026-09-27T22:38:12.778112+00:00

## Record provenance

Exact record hash: `eec39f6501d594bed3b861d4106437d5e83aa91adeb73e53b653e045999d7f75`

Source journal: `Research_Cycles/C0482_C0531/journal.json`