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# Experiment 60B.82 — Live Explicit Confirmation Closure Confirmed
**Date:** 2026-08-15
**Branch:** `feature/decision-closure-ownership-v0.47`
**Preceded by:** Experiment 60B.81 (live no-confirmation State B path confirmed)
**Type:** Paired live observation — explicit-confirmation positive branch
## Objective
After 60B.81 proved the negative branch (no confirmation → decision stays open + sufficiency question), answer: does explicit sufficiency confirmation still close the decision cleanly?
```text
final represented factor resolves
+
explicit sufficiency confirmation present
=>
parent decision may close
=>
active target clears
=>
no further question
```
## Method
- **Fixture:** `tests/fixtures/pre-anchored-product-launch-customer-signing.json`
- **Input (ANSWER_2):** `"The enterprise customer has now confirmed in writing that they will not sign if we launch this year, so the £700,000 of expected annual revenue from them will not be received. There are no other material uncertainties between launching this year and waiting twelve months."`
- **Crucially present:** `"There are no other material uncertainties"` — explicit sufficiency confirmation
- **Mode:** updateOnly (1 update call via production HTTP route)
## Result
**Classification: A — LIVE EXPLICIT-CONFIRMATION CLOSURE CONFIRMED**
### Observed
| Field | Value |
|-------|-------|
| Customer status | resolved |
| Decision status | resolved (terminal) |
| resolvedUnknownNodeIds | ["n_enterprise_customer_signing", "n_product_launch_decision"] |
| finalActiveUnknownNodeId | null |
| finalSelectedQuestion | null |
| addedNodes | [] |
| addedEdges | [] |
| Financial revision | £1.2M/year → £500k/year (correctly reflects £700k enterprise loss) |
### What This Proves
1. Explicit sufficiency confirmation ("no other material uncertainties") flows cleanly through the 60B.80 gate to terminal closure of the parent decision.
2. Both the paired negative branch (60B.81: no confirmation → State B) and positive branch (60B.82: explicit confirmation → terminal close) are now live-baselined.
3. The confirmation-gated lifecycle is symmetric and complete in production.
### What Remains Unproven by This Run
- Edge-case confirmation phrasings (implicit, partial, or negated confirmation language).
- Multi-node simultaneous resolution with confirmation.
- Confirmation under contradiction reasoning constraints.