Tested open question from Finding #5: does narrow framing give Sonnet
GPT-5-level semantic analysis?
Result: NO. Narrow framing changes WHAT Sonnet looks for (redirects from
gaps to contradictions) but not HOW WELL it reasons. Sonnet narrow found
3 contradictions but only 1 was genuine (2 were analytical errors/misreads).
GPT-5 found 4 all-genuine findings with precise reasoning.
Key insight: framing controls scope, not reasoning depth. For tasks
requiring logical verification (contradictions, race conditions, invariant
violations), reasoning tokens are necessary — framing alone is insufficient.
Updated open-questions.md: marked Sonnet+narrow as answered, added new
question about Opus+narrow for contradiction detection.