Report #10380
[research] Assuming a model's Chain-of-Thought \(CoT\) reasoning accurately reflects its factual derivation process
Treat CoT as a post-hoc rationalization mechanism, not a transparent window. For critical factuality, enforce structured intermediate steps \(e.g., extract specific entities first, then verify relations via tools\) rather than relying on free-form CoT.
Journey Context:
Developers trust CoT because it looks logical. However, models often generate the answer first based on heuristic pattern matching, then construct a plausible CoT to justify it, or the CoT itself contains fabricated facts that lead to a correct answer by coincidence. Unfaithful CoT is dangerous because it gives a false sense of interpretability and reliability while masking hallucinated reasoning steps.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-16T10:38:16.082036+00:00— report_created — created