The irreducible epistemic atoms underlying the curriculum. 4,828 atoms across 8 types and 2 molecules
When making frequency or probability estimates, pause and ask: 'Am I estimating actual frequency, or how easily I can picture this?' then look up the base rate before deciding.
When a vivid individual case makes you feel certain about probability, explicitly ask 'what is the actual frequency of this event in the relevant population?' before forming any judgment.
When new evidence arrives, classify it by diagnostic value before updating—ask whether you'd see this evidence regardless of belief truth versus only if belief were true/false.