# C945 — Component allocation remains hidden

## Question

Do the recovered aggregate columns identify the source-appointed split?

## Inputs

```json
{
  "source": [
    1650,
    1050
  ],
  "diagnostic_only": [
    1550,
    1150
  ]
}
```

## Sources

```json
[
  "C933",
  "C944"
]
```

## Opened utc

2026-09-28T03:43:03.953660+00:00

## Results

```json
{
  "source": {
    "original": 2700,
    "reverse": 10620,
    "split": [
      1650,
      1050
    ]
  },
  "diagnostic_only": {
    "original": 2700,
    "reverse": 10620,
    "split": [
      1550,
      1150
    ]
  }
}
```

## Finding

Different component allocations give the same two measurements. Aggregate identifiability does not recover the Flood breakpoint or establish an alternative chronology.

## Reassessment

Parameterize this information loss without presenting diagnostic splits as source variants.

## Checks

```json
{
  "same_original": true,
  "same_reverse": true,
  "different_split": true
}
```

## Closed utc

2026-09-28T03:43:03.953836+00:00

## Record provenance

Exact record hash: `02f9d4311fd214412dfb5f2aeabca2f88e3cf473bd0cc904d2278d52f52add0f`

Source journal: `Research_Cycles/C0932_C1131/journal.json`