“The three kinds of non-fiction books” — @CedricChin

Why this is in the vault

Cedric’s reading-as-career-investment series — how to read non-fiction strategically (3 categories, land-and-expand, follow-your-nose). RDCO’s vault-and-discover-sources skill stack is built on this foundation; these pieces are the canonical citations.

The core argument

Cedric’s taxonomy of non-fiction: (1) idea books — read for the central thesis, skim the rest; (2) narrative books — read linearly, the story IS the value; (3) reference books — never read end-to-end, use as a lookup. Mismatching reading mode to book type wastes most of the time spent reading non-fiction.

Mapping against Ray Data Co

Direct mapping to vault operating principles: (1) the discover-sources skill uses Cedric’s 3-categories taxonomy to triage what to read; (2) the curiosity skill uses ‘follow-your-nose’ as its forcing function for surfacing periphery questions; (3) the process-newsletter skill’s batch-summarization pattern is Cedric’s land-and-expand applied to inbound content.

Related

• 2026-04-15-commoncog-becoming-data-driven-first-principles

Source: The three kinds of non-fiction books by Cedric Chin (Commoncog). 1500 words. Filed 2026-04-19 as part of Start-Here + Business-Expertise-Triad backfill cohort.