06-reference

commoncog the mental model faq

Sat Apr 18 2026 20:00:00 GMT-0400 (Eastern Daylight Time) ·reference ·source: Commoncog ·by Cedric Chin

“The Mental Model FAQ” — @CedricChin

Why this is in the vault

Anchor piece in Cedric’s argument that mental-model collecting is intellectually pleasurable but action-useless — only practitioners can transmit usable models, and the test is downstream skill, not crisp explanation. Directly informs how Sanity Check is written and how we evaluate other thought-leaders for the vault.

The core argument

Cedric’s FAQ-format answer to the most common pushback on the Mental Model Fallacy essay. Distils which models are worth knowing (mostly economics/probability/psychology basics) and which are framework-cosplay. Practical reading list bias: prefer practitioner-written sources to popularizers.

Mapping against Ray Data Co

The Mental Model Fallacy is the reason Sanity Check refuses to publish ‘N mental models for data engineers’ listicles. Our editorial bar: every piece must come from a deployment we ran, a client conversation we had, or a vault contradiction we resolved — not from re-packaging someone else’s framework. This piece is the canonical citation when explaining that bar to writers/contributors.

Source: The Mental Model FAQ by Cedric Chin (Commoncog). 4147 words. Filed 2026-04-19 as part of Start-Here + Business-Expertise-Triad backfill cohort.