"How First Principles Thinking Fails" — @CedricChin

Why this is in the vault

Foundation epistemology piece — Cedric's argument that frameworks are useful, not true, and that the test is whether they help you act under uncertainty. This shapes how RDCO writes (Sanity Check's anti-framework-cargo-cult bias) and how we run client engagements (we resist deploying methodologies for their own sake).

The core argument

Cedric's critique of the Musk-popularised 'first principles thinking' meme. First-principles reasoning works in physics-like domains where the principles are stable and well-known. In business and most career decisions, the 'principles' are themselves contested and slow-moving — first-principles reasoning produces overconfident conclusions on shaky premises.

Mapping against Ray Data Co

Sanity Check's editorial voice is heavily indebted to Cedric's epistemological humility — 'optimise for usefulness' is essentially our north star vs. the LinkedIn-thought-leader tendency to package observations as 'frameworks'. When we write about agent deployments, the bar is whether the reader can act differently tomorrow, not whether the post sounds insightful.

Related

• [[2026-04-15-commoncog-no-truth-in-business-only-knowledge]]
• [[2026-04-15-commoncog-deming-paradox]]

Source: How First Principles Thinking Fails by Cedric Chin (Commoncog). 1729 words. Filed 2026-04-19 as part of Start-Here + Business-Expertise-Triad backfill cohort.