Tests the open question from Finding #39: does Opus's internal reasoning
depth suffice for self-contradiction verification?
Key result: wrong question. Opus finds a different CLASS of contradiction
than GPT-5. GPT-5 finds specification conflicts (statement comparison).
Opus finds logical impossibilities (deductive rule interaction). Neither
dominates — they don't overlap. Sonnet remains unreliable (~33% precision).
Document tested: escalation-policy.md (228 lines)
Models: GPT-5, Claude Opus 4.6, Claude Sonnet 4.6
claw