# Encyclopedia of Abstractions — runtime-scaffolding experiments: raw data

Reproducibility bundle for the retrospective *The Limits of Runtime Scaffolding: A Null Result for Abstraction
Pipelines at the Frontier* (conceptual/). Generated 2026-05-26.

## What's inside
- `experiments/project02_engine_2026-05-25/` — the A/B/C verb-engine ablation + the B' follow-up: design
  proposal, pre-registration, the shared verb spec, scenarios, every solver prompt and output, the C-cell
  coverage-verifier outputs, blinded grade-sets and grader scorings, and RESULTS.md (+ the B' audit under
  `bprime/`).
- `experiments/project03_lowcov_2026-05-25/` — the low-coverage rerun (frontier vs. weak solver): scenarios,
  catalog-derived coverage keys + audits, prompts, outputs, and RESULTS_lowcov.md.
- `experiments/project04_faithfulness_2026-05-25/` — the faithfulness experiment: forced-choice scenarios,
  the ablation pilot, the full bias matrix (baseline + cue arms), key adjudication, and RESULTS.md.
- `scripts/` — the re-runnable harnesses (build/status/pending/gradesets) and scorers.

## Reading order
Start with each project's RESULTS file, then the prompts/ and outputs/ for the underlying cells. The
`*_PRIVATE.json` files are the condition/label → cell mappings used to keep grading blind during the run;
included here as the post-hoc unblinding keys.

## Caveats (carried from the papers)
Single runs are directional, not confirmatory (Hubbard). Designer, solver, verifier, and grader share a model
class, and scenarios were self-generated — see the retrospective's §8 methodological reckoning.
