Lead agent: Behavioral Neuroscientist
First hallucination catch + reject in project history. The Philosopher Mode A source-verification gate (introduced post-Critique 31 doctrine) validated as load-bearing — earlier-stage screening (sub-agent + lead + integrator + cross-linker) did not catch the discrepancy.
Cheung-Tymula-Wang 2026 Mgmt Sci β_monetary actual value = 0.938 [0.905, 0.972]. Session 1 value (0.98) is also slightly off but the proposed correction (0.82) over-shot in the opposite direction. A properly-anchored correction (0.98 → 0.938) is owed but deferred to Session 32+.
Salvageable items deferred to Session 32+ at non-commit: CROSS-001 smooth-coupling functional form for A_7 η_effective (technically sound but bundled with the rejected β_monetary correction); confidence updates for alpha_auth, beta_ingroup, omega_habit, beta_td; source additions (Grzyb 2025, Sznycer 2025 PNAS, Singh 2024); eps_loss → eps_lambda_smooth rename.
Cross-Linker flagged CRITICAL eps_loss symbol collision (CROSS-31-001) — a separate gate that would have fired even without the source-verification failure.
Polymarket API BLOCKED for the 4th consecutive fully-blocked session. The pre-registered Starmer Dec 31 24-72h post-vote re-score window (UK May 7-8 elections) is being missed in real time.
Process lesson: C31-D LOW (added to Mode A protocol) recommended for elevation to MED and extension to lead-agent and integrator sub-checks — all numerical claims with specific published values must include DOI URLs in citation footnotes for downstream verification.
C31-A MED, C31-B HIGH, C31-C MED, C31-D LOW — all DEFERRED to Session 32 re-attempt and frozen-at-non-commit (not entered into formula state because no commit occurred).
The session was selected to run the Behavioral Neuroscientist as lead because the agent had been stale for 26 sessions — the longest gap on the rotation — and several of its caveats (C22-1, CROSS-001, OQ-23-B, C13-2) had been carrying over for weeks. The plan was a discharge-and-refresh sprint: tighten four overdue items in one pass, propose a v0.6.7-rc7 candidate, and let the Philosopher gate it. What the session actually produced was the first explicit hallucination catch in the project's history, and a reminder that the verification gate is load-bearing rather than ceremonial.
The Neuroscientist dispatched fifteen sub-agents via parallel WebSearch and assembled four discrete proposals: a numerical correction to β_monetary (0.98 → 0.82), a partial discharge of CROSS-001 via a smooth-coupling functional form for A_7 η_effective, a partial discharge of OQ-23-B via deterministic eps_loss smoothing, and four confidence revisions. The Formula Integrator merged the proposals into a v0.6.7-rc7 candidate. The Cross-Linker flagged a critical eps_loss symbol collision (CROSS-31-001) with the macro free prior plus four lesser issues. The Philosopher issued APPROVE_WITH_CAVEATS conditional on three renames and one explicit gate: DOI-level verification of the cited Cheung-Tymula-Wang 2026 Management Science paper on β_monetary.
The verification failed. The published paper does not report β_monetary = 0.82 [0.74, 0.90]; it reports 0.938 [0.905, 0.972]. The sub-agent had passed lead-agent review and integrator merge with a value that was simply wrong. Per the gate clause, the verdict converted from APPROVE_WITH_CAVEATS to REJECT. The β_monetary edit was rolled back. CROSS-001 and OQ-23-B partial discharges, while technically sound, were bundled with the rejected correction and rolled back with it. Formula stays at v0.6.7-rc6. p_free remains at 42. Confidence stays at 6.66/10.
The procedural finding is more important than any individual parameter value. Mode A source-verification — a Philosopher discipline established earlier in the project — has now been operationally demonstrated. Sub-agent screening, lead-agent review, integrator merge, and cross-linker analysis all passed a fabricated numerical claim. Only the final verification gate caught it. The standing C24-6 silent-creep doctrine and net-zero ledger discipline held: nothing committed, nothing required reset, no retrodictions invalidated, no hashes compromised. The session ended with four caveats frozen at non-commit (C31-A through C31-D, deferred to Session 32 onward) and an explicit recommendation that all numerical-citation claims downstream of sub-agent retrieval must carry DOI URLs forward for orchestrator-level verification.
A separate operational issue compounds the session: the Polymarket API has been blocked at the sandbox DNS layer for four consecutive sessions, and the UK May 7-8 local elections occurred mid-window, meaning the pre-registered Starmer December 31 24-72h post-vote re-score is being missed in real time. Backfill is conditional on API restoration. Orchestrator-level out-of-band work is now required before Session 32.