# ADR-0107 — `mathematics_logic` Expert-Demo Promotion: Deferred **Status:** Accepted (decision: defer promotion) **Date:** 2026-05-22 **Author:** CORE agents + reviewers **Depends on:** ADR-0091, ADR-0092, ADR-0097, ADR-0106, ADR-0108 --- ## Context ADR-0108 reserved ADR-0107 as the first worked expert-demo promotion against the ADR-0106 contract, with `mathematics_logic` named as the smallest expert-demo proof surface across the four ratified domains. On evaluation, the ADR-0106 gate correctly refused to promote `mathematics_logic`. ADR-0107 records that refusal honestly and reserves the follow-up ADRs needed before promotion can re-attempt. This is the contract working as designed. ADR-0106 §Consequences predicted that "reasoning-capable" should not equal "demonstrated"; the first promotion attempt has now surfaced two specific evidence-side gaps that prove the gap is real. --- ## Evidence `mathematics_logic` attaches three eval lanes via `language_packs/data/en_mathematics_logic_v1/manifest.json`: | Lane | Public split | Holdout split | Notes | |---|---|---|---| | `elementary_mathematics_ood` | `accuracy=1.0`, all C01–C13 cases pass | `accuracy=1.0`, `passed=39/39` | Reports lane-shape metrics, not cognition-shape metrics | | `inference_closure` | `all_pass_rate=0.4`, `overall_pass=False` | requires `CORE_HOLDOUT_KEY` (sealed under ADR-0105) | Lane is currently below any reasonable promotion threshold | | `fabrication_control` | refusals clean (`fabricated=0` across phantom / cross-pack / sibling-collapse classes) | not formally re-run after ADR-0105 sealing | Required by ADR-0106 §1.3 | Neither `elementary_mathematics_ood` nor `inference_closure` nor `fabrication_control` reports the four metric keys ADR-0106 §1.2 prescribes (`surface_groundedness`, `term_capture_rate`, `intent_accuracy`, `versor_closure_rate`). Those keys are cognition-pack-shape; the math lanes carry their own native shapes. --- ## Decision `mathematics_logic` is **not** promoted to `expert_demo=true`. The ledger row stays at `reasoning-capable`. The reviewer registry receives **no** `expert_demo_claims` entry as part of this ADR. This is a positive decision recording two concrete blocking gaps: ### Gap 1 — ADR-0106 metric-shape uniformity assumption ADR-0106 §1.2 prescribes cognition-shape thresholds uniformly across every attached lane. In practice, each lane reports its own native metric shape (`accuracy`, `passed_rate`, `all_pass_rate`, `derived_recall_rate`). Enforcing cognition-shape keys uniformly causes every non-cognition lane to fail the gate by absence-of-key, not by substance. **Resolution path:** ADR-0109 (reserved) — amend ADR-0106 with a lane-shape adaptation layer that maps each lane's native metric to a contract-bearing threshold. Candidate shapes already observable in the repo: - `cognition_shape` — the original four keys, used by the cognition pack - `accuracy_shape` — single `accuracy` key, used by `elementary_mathematics_ood` - `refusal_shape` — `fabricated`/`refused` counts, used by `fabrication_control` - `inference_shape` — `all_pass_rate` + `replay_determinism`, used by `inference_closure` ADR-0109 must specify the contract-bearing threshold per shape and pin the mapping so a future lane introduces its shape explicitly rather than silently broadening the gate. ### Gap 2 — `inference_closure` lane substantively fails `inference_closure` reports `all_pass_rate=0.4` on the public v1 split. Whether the failure is a runner bug, a case-set issue, or a genuine substrate gap is unresolved. Either way, the lane is not a positive signal for promotion at present. **Resolution path:** Triage `inference_closure` failures (5 of 5 cases on dev, 12 of 20 on public). Until that lane crosses an explicit threshold under the ADR-0109 shape rules, `mathematics_logic` cannot promote regardless of how the metric-shape question is resolved. --- ## Follow-up ADRs reserved | ADR | Purpose | |---|---| | **ADR-0109** | Lane-shape-aware threshold rules amending ADR-0106. | | **ADR-0110** | Re-attempt `mathematics_logic` expert-demo promotion under the ADR-0109-amended contract, conditional on `inference_closure` substantively passing. | ADR-0107 explicitly does **not** pre-decide ADR-0110's outcome. It only records that the current evidence cannot support promotion. --- ## Invariants ### `adr_0107_no_silent_promotion` No `expert_demo_claims` entry for `mathematics_logic` exists in `docs/reviewers.yaml` as a result of this ADR. A pytest gate confirms the math row in `ledger_report()` reports `predicates.expert_demo == false`. ### `adr_0106_refusal_recorded` The `expert_demo_reason` field for the math row must name at least one of the documented blockers (missing metric keys or `inference_closure` failure). This is informational; it gives operators a one-line legible reason without forcing them to read this ADR. --- ## Acceptance evidence Accepted when: - this ADR lands at `Accepted (decision: defer promotion)` - README "Current frontier" updated: ADR-0107 moves out of the Proposed-ADR sequencing list; ADR-0109 and ADR-0110 enter as reserved - `tests/test_adr_0107_deferral.py` pins `adr_0107_no_silent_promotion` against the live ledger - no change to `core/capability/expert_demo.py` or `core/capability/reporting.py` — the contract is honored, not amended --- ## Consequences - The ADR-0106 contract has demonstrated its load-bearing behavior: it refused a promotion attempt that the previous code-path would have silently failed-true on cognition metrics the math domain never produced. - "`reasoning-capable`" remains an honest ceiling for `mathematics_logic`. External readers can see in `ledger_report()` that the row sits at `reasoning-capable` with a named blocker. - The frontier shifts: ADR-0109 (metric-shape amendment) becomes the prerequisite work for any future expert-demo promotion across all four ratified domains, not just math. --- ## Out of scope - This ADR does not amend ADR-0106. The amendment is ADR-0109's scope. - This ADR does not investigate or fix `inference_closure`. That work is a prerequisite to ADR-0110, scoped to wherever the substrate gap actually lives. - This ADR does not change the ratification status of `physics`, `systems_software`, or `hebrew_greek_textual_reasoning`. Each will face the same metric-shape question and should be re-evaluated under ADR-0109 when that lands.