Context
A 10-round RLCR session terminated via stagnation circuit breaker at round 9. The session completed 4 of 6 acceptance criteria, with 2 remaining ACs blocked on external factors (infrastructure provisioning and user decision on a disproven plan assumption). The session included high-value review catches (API contract violations, wrong metric populations, configuration parameter omissions) but also spent ~4 rounds on unproductive work.
Findings
What worked well:
- Reviews caught real high-severity bugs that would have been silent failures in production
- Systematic investigation of plan assumptions produced conclusive evidence rather than anecdotal claims
- Consistent documentation structure enabled retrospective audit
- Bitlesson capture built institutional knowledge from novel failure modes
What needs improvement:
1. Environment Parity Pre-Check
Pattern: Reviewer and implementer operated in different environments (different interpreters, different installed packages), causing 3 rounds of fix-then-fail on test infrastructure.
Improvement: Document expected test environment before Round 0. Reviewer accepts documented results when local reproduction is unavailable.
2. Escalate and Freeze for External Blockers
Pattern: External blockers (infrastructure constraints, threshold mismatches requiring user decisions) were repeatedly re-litigated across 5+ rounds.
Improvement: Formal escalation mechanism that freezes externally-blocked ACs and prevents further rounds attempting them.
3. Automatic Loop Pause on All-External Blocking
Pattern: Loop continued running empty rounds when all remaining work was blocked on external decisions.
Improvement: Auto-pause with handoff document when no loop-resolvable work remains.
4. Separate Diagnostics from Prescriptions in Reviews
Pattern: Reviewer over-specified implementation approach, sometimes constraining solutions to suboptimal paths.
Improvement: Clearly separate gap/bug description from suggested fix; mark suggestions as non-binding.
5. Formal Plan Rebaseline Protocol
Pattern: When validation disproved a plan assumption, neither party had a clean mechanism to amend the immutable plan section.
Improvement: Rebaseline mechanism requiring: original assumption, disproving evidence, proposed new criterion, and user approval.
6. Pre-Flight Infrastructure Validation
Pattern: Test infrastructure issues discovered mid-loop consumed 3 rounds for what was ultimately a dependency-isolation fix.
Improvement: Run infrastructure validation round before main loop; resolve gaps before productive work begins.
7. Differential Review Format
Pattern: Reviews re-audited unchanged blocked items every round, producing repetitive paragraphs.
Improvement: Unchanged items referenced by status only; full analysis reserved for deltas.
8. Internal vs External Blocker Classification
Pattern: Infrastructure/user-decision blockers treated identically to implementation blockers, causing the loop to keep running against unresolvable items.
Improvement: Classify blockers by resolvability; external blockers trigger loop pause with handoff document.
Context
A 10-round RLCR session terminated via stagnation circuit breaker at round 9. The session completed 4 of 6 acceptance criteria, with 2 remaining ACs blocked on external factors (infrastructure provisioning and user decision on a disproven plan assumption). The session included high-value review catches (API contract violations, wrong metric populations, configuration parameter omissions) but also spent ~4 rounds on unproductive work.
Findings
What worked well:
What needs improvement:
1. Environment Parity Pre-Check
Pattern: Reviewer and implementer operated in different environments (different interpreters, different installed packages), causing 3 rounds of fix-then-fail on test infrastructure.
Improvement: Document expected test environment before Round 0. Reviewer accepts documented results when local reproduction is unavailable.
2. Escalate and Freeze for External Blockers
Pattern: External blockers (infrastructure constraints, threshold mismatches requiring user decisions) were repeatedly re-litigated across 5+ rounds.
Improvement: Formal escalation mechanism that freezes externally-blocked ACs and prevents further rounds attempting them.
3. Automatic Loop Pause on All-External Blocking
Pattern: Loop continued running empty rounds when all remaining work was blocked on external decisions.
Improvement: Auto-pause with handoff document when no loop-resolvable work remains.
4. Separate Diagnostics from Prescriptions in Reviews
Pattern: Reviewer over-specified implementation approach, sometimes constraining solutions to suboptimal paths.
Improvement: Clearly separate gap/bug description from suggested fix; mark suggestions as non-binding.
5. Formal Plan Rebaseline Protocol
Pattern: When validation disproved a plan assumption, neither party had a clean mechanism to amend the immutable plan section.
Improvement: Rebaseline mechanism requiring: original assumption, disproving evidence, proposed new criterion, and user approval.
6. Pre-Flight Infrastructure Validation
Pattern: Test infrastructure issues discovered mid-loop consumed 3 rounds for what was ultimately a dependency-isolation fix.
Improvement: Run infrastructure validation round before main loop; resolve gaps before productive work begins.
7. Differential Review Format
Pattern: Reviews re-audited unchanged blocked items every round, producing repetitive paragraphs.
Improvement: Unchanged items referenced by status only; full analysis reserved for deltas.
8. Internal vs External Blocker Classification
Pattern: Infrastructure/user-decision blockers treated identically to implementation blockers, causing the loop to keep running against unresolvable items.
Improvement: Classify blockers by resolvability; external blockers trigger loop pause with handoff document.