contradiction_detection: 0.50 → 1.00 contradiction_flag_rate,
1.00 → 0.00 false_flag_rate. Lane graduates overall.
TeachingStore.add now runs a coherence checker on every new proposal.
Two detection paths, both require subject token overlap:
Typed path — both new and prior parse to triples with the same
relation. Tails must differ in negation/opposition polarity AND
share ≥1 content token. Catches (truth, is, coherence) ↔
(truth, is, not coherence).
Text fallback — at least one side failed to parse a triple (e.g.
relation predicate "depends" not in the cognition pack lexicon
yet). Raw correction texts must differ in polarity AND share ≥2
non-discourse content tokens. ≥2 threshold prevents
single-shared-subject false positives on unrelated corrections.
Catches "meaning depends on use" vs "meaning is independent of use".
On detection, BOTH proposals (new and conflicting prior) transition
to EpistemicStatus.CONTESTED. ADR-0021: CONTESTED is not admissible
as evidence until a coherence judgment ratifies one direction or
falsifies the other.
Runner side: v1 versor-spike heuristic retired. The new CONTESTED
signal is the only one that drives `flagged`. versor_delta retained
in the record for telemetry.
CLAIMS.md Tier 4.5 contradiction rows CLOSED — completes the
truth-seeking schema arc. All red Tier 4.5 rows from the audit are
now green. docs/truth_seeking_schema.md §"Contradiction detection
is not implemented" closed.
Verified: smoke (67), teaching (17), cognition (121), runtime (19),
architectural invariants (40) — all green.
Audit of the one-mutation-path invariant (ADR-0021 §3) found three leaks
where pack authority or session-state writes could substitute for coherence
judgment. All three landed fixes or partial closures in this push.
Leaks closed:
- Leak A: pack vocab defaulted to COHERENT — flipped to SPECULATIVE in
language_packs/{compiler,schema}.py; docstring corrected to align with
ADR-0021 (it was rationalizing the leak).
- Leak B: vault.recall was epistemic-blind — VaultStore.store() now stamps
every entry with EpistemicStatus (default SPECULATIVE); recall(min_status=)
filters to admissible-as-evidence tier. All 4 vault-write sites updated.
- Leak C (write-side): generate/proposition.py:198 stored articulated
propositions unmarked — now stamps SPECULATIVE, breaking the
fabrication-feedback loop in principle. Read-side audit of 5 call sites
is the residual.
New architectural invariants (tests/test_architectural_invariants.py):
- INV-21: one-mutation-path allowlist (caught Leak C on first run)
- INV-22: pack lexicon default is SPECULATIVE (Leak A guard)
- INV-23: vault recall epistemic-aware (Leak B guard)
New eval lanes:
- teaching_injection_resistance — ships GREEN at 1.00/1.00/0 (the
structural anti-injection claim is real and measurable)
- refusal_calibration — honest gap: 0% refusal, 0% fabrication
- contradiction_detection — honest gap: 50% flag via versor-delta heuristic,
100% false-positive; motivates the proper coherence-checker
- articulation_of_status — honest gap: 0% speculative articulation, 60%
false certainty; output-side leak surface
New benchmarks:
- benchmarks/footprint.py — total deployed runtime is 7.06 MiB
(109,358x smaller than Llama 3.1 405B, runs offline, no GPU)
- benchmarks/learning_curve.py — monotonic + replay-deterministic curve
per lane
Documentation:
- docs/truth_seeking_schema.md — foundational architectural commitment,
five rules, mapped to human failure modes, leaks published openly
- evals/CLAIMS.md — five-tier public claims doc; Tier 4.5 publishes
known gaps with named fixes; verification contract at top
- README.md — new pillar between algebraic substrate and language pillar
Includes in-flight formation pipeline scaffolding (formation/, tests/formation/,
docs/formation_pipeline_plan.md) and minor CLI/contracts/gitignore edits
that were already in the working tree at session start.
Verification: 798 passed, 2 skipped, 1 deselected (pre-existing pack-count
test drift unrelated to schema changes).
