# C671 — Consolidate the retained-path explanation

## Question

What new mechanism connects biography, cumulative paths and calendar flanks?

## Inputs

```json
{
  "completed_range": [
    652,
    671
  ],
  "precision": [
    "phase test holds outer nodes fixed",
    "2083/1936/1446 path uses whole-year displays"
  ]
}
```

## Sources

```json
[
  "C652–C670",
  "Reviewer C652–C664"
]
```

## Opened utc

2026-09-28T01:09:53.093395+00:00

## Results

```json
{
  "artifact": {
    "path": "deliverables/C671_Interim_Synthesis.md",
    "sha256": "2a41c2f375f92b22f0b043d23cd38cd2a3e48eaaa15807d6e901f8eda3ebf527",
    "bytes": 988
  },
  "mechanisms": [
    "reflection",
    "indexed path",
    "retained core and flanks"
  ]
}
```

## Finding

Forty steps now provide a connected explanatory grammar. The next productive question is how phase and center coordinates account for the source’s40/70/120 fields and Actual/Rounded closure.

## Reassessment

Derive the complete micro phase table from center, width and phase offsets.

## Checks

```json
{
  "range": true,
  "core_flank": true,
  "spine": true
}
```

## Closed utc

2026-09-28T01:09:53.093672+00:00

## Record provenance

Exact record hash: `c0fea8a69bfff9cd2fbde9e529de06cd0c6154e22d7db324869023ecc68124f0`

Source journal: `Research_Cycles/C0632_C0731/journal.json`