Critical thinking is one of those subjects that sounds simple (“think carefully”), but becomes surprisingly deep once you study it seriously. At its core, critical thinking is the disciplined process of evaluating claims, arguments, evidence, assumptions, and reasoning before accepting a conclusion.

A useful way to think about it:

Intelligence helps you generate ideas.

Critical thinking helps you determine whether those ideas are actually true.

Vault Map

SectionPurpose
Cognitive BiasesSystematic errors in thinking
Logical FallaciesFlawed argument patterns
Mental ModelsLenses for understanding reality
Claim AnalysisEvidence-weighted belief tracking
Paper ReviewsReviews of academic papers
ForecastsPrediction + calibration training
Thinking JournalDaily reflection and practice

Beginner

Intermediate

Advanced

For Scientific and Technical Thinking

Moral Philosophy & Ethics

  • Moral Philosophy Reading List — a 12-book sequence on ethics and reasoning about values (Levinas, Nietzsche, Parfit, Aristotle, Kant, Mill, Rawls, Scanlon, Ross, Cuneo, Slote, Moore)