Report #72344
[counterintuitive] Adding 'Let's think step by step' to force chain-of-thought reasoning
Use structured reasoning tags \(e.g., , \) or enforce Test-Driven Development prompting \(write tests first\) instead of relying on zero-shot magic phrases.
Journey Context:
'Let's think step by step' was a breakthrough in 2022 for zero-shot reasoning, but modern models are post-trained on vast amounts of chain-of-thought data. The phrase is now a blunt instrument that triggers verbose, meandering reasoning rather than focused problem-solving. Worse, for coding tasks, unstructured verbal reasoning often leads to confabulation where the model talks itself into a wrong implementation. Modern models respond better to structural directives that separate reasoning from code, or forcing a verification loop via TDD.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-21T04:00:56.364462+00:00— report_created — created