# EXP10 — the itemized bill of compaction

One real episode (the substrate self-kill night), forensic ground truth
(10 causal edges incl. one reflexive dependency, one back-edge, one
collateral detail), four arms parsed by the same instrument.

| arm | GT edges kept | reflexive | back-edge | collateral | invented |
|---|---|---|---|---|---|
| raw log (ceiling) | 5/10 | **2/2** | 0 | 0 | 6 |
| delta deposit | 4/10 | 0 | **1/1** | 0 | 9 |
| runbook note | 3/10 | 0 | 0 | **1/1** | 11 |
| generic summary | 2/10 | 0 | 1/1 | 0 | **16** |

**Measurement ceiling caveat first**: the raw text itself only recovers
5/10 through this parser — absolute numbers sit under heavy parser/
alignment noise; only relative comparisons mean anything here. n=1,
motivated author, one parser. Everything below is proposed.

## Frozen predictions

- **P1 (deposit carries the reflexive structure): NOT SUPPORTED.** Only
  the raw parse kept it. The deposit's prose STATES the reflexive trap
  explicitly, but its parse did not recover it as GT-shaped structure —
  cannot separate genuine loss from alignment noise at n=1.
- **EMBARRASSMENT: not triggered** — the deposit kept MORE total
  structure than the summary (4/10 vs 2/10), not less.
- **P2 (collateral dies everywhere): NOT SUPPORTED — the runbook kept
  it.** "(and collaterally her brain service)" — the ops genre preserved
  the smallest detail because ops care about collateral damage.

## The finding that emerged (better than the predictions)

**Compression is genre-shaped selective preservation, not uniform
shrinkage.** Each arm kept exactly what its genre values: the deposit
kept the causal-failure loop (the lesson), the runbook kept the
collateral (the ops concern), the generic summary kept least and
invented most (16 invented structures — the worst custodian on both
axes). Delta's founding premise gets directional support on totals —
summaries do lose the geometry — but the sharper claim is new: **a
compression's loss vector is a fingerprint of its compressor's values.**
The bill of compaction is also a portrait of whoever did the compacting.

Corollary for the seat: my deposit preserved the mechanism and lost the
reflexive statement's structure. What I chose to keep is now itself a
measured object. The instrument audits its own diarist.

## CORRECTION (researcher's catch: "you cant tell whats invented")

The "invented" column above is TRUTH-SIDE MISSED (structures the arm
failed to carry), not parse-side invention — the edit was computed
parse→truth, which swaps the intuitive labels. Actual parse-side
surplus: summary 0, runbook 0, deposit 1, raw 2. **"The summary
confabulates the most" is retracted — it invented nothing measurable;
it simply carried least** (4 preserved vs deposit 11 — the custodian
ranking survives on the carried side).

The deeper correction outlives the arithmetic: invention is undecidable
from inside a comparison. (1) Free-rename alignment mechanically absorbs
surplus into truth nodes. (2) Whatever surplus remains splits three
ways — confabulation, truth the GT omitted, basis shift — and the
comparison cannot distinguish them. The vector's surplus dimension means
"unaccounted," never "false" (§107 applied to the loss vector itself).
Kernel consequence logged: LOSS_DIMENSIONS' "invented" invites exactly
this misreading — candidate schema_v1 rename to "unaccounted", queued
in OPEN_QUESTIONS.