ZhiKe AI

Jun 23, 2026 · Fundamentals

How Feynman's 4‑Step Method Turns Passive Study into 90% Retention

The article explains why passive learning leads to forgetting, introduces the Feynman technique that uses teaching to expose knowledge gaps, outlines its four iterative steps, and cites cognitive‑science evidence such as the learning pyramid, IOED, and the generation effect to show how active output boosts retention from about 5% to 90%.