Feynman Technique
The Feynman Technique is a learning method that emphasizes teaching an idea to deepen understanding, involving four steps: study, teach, identify gaps, and simplify.
THE IDEA
The “Feynman technique” uses explanation as a test of understanding. If you cannot explain an idea clearly, the attempt can expose something you need to study again. Hollins presents the method as an approach inspired by Richard Feynman’s habits as a learner and science educator.
The method has four steps:
- Study the topic and work through its reasoning.
- Teach it in your own words, without relying on notes or unexplained jargon.
- Identify gaps: a missing step, a term you cannot define, or a question you cannot answer. Return to the material to resolve them.
- Simplify the explanation while preserving its accuracy, then try teaching it again.
A polished explanation can still hide a mistake. Check it against the material, invite questions, and work through examples that test whether you understand how the idea applies.
When to use it
Preparing for an exam by explaining key concepts aloud to a study partner.
Learning a new professional skill by teaching it to a team member or writing a tutorial.
Debugging a complex problem by breaking it down and explaining the system step-by-step to a non-expert.
Studying a scientific paper and then summarizing it in plain language for a blog post or presentation.
FROM THEORY TO EVERYDAY LIFE
In practice
Learning Quantum Mechanics
A student studying quantum mechanics uses the Feynman Technique by first learning the material, then teaching it to a peer without notes. They identify gaps when they stumble and revisit those areas, then simplify the explanation using analogies.
Mastering a New Programming Language
A developer learning Python applies the technique by reading documentation, then explaining the concepts to a junior colleague. They note areas where their explanation is unclear, study those parts more deeply, and refine their explanation until it's simple and accurate.
A MOMENT TO REFLECT
Put it to work.
What concept am I trying to learn, and how would I explain it to a complete beginner?
When I try to teach this idea out loud, where do I get stuck or use technical jargon?
How can I simplify my explanation further without losing the core idea?
CONTINUE THE CONVERSATION
Source texts
- Richard Feynmans Mental Models by Peter Hollins