The Feynman Technique is a learning method named after Nobel Prize-winning physicist Richard Feynman that tests true understanding by forcing you to explain a concept in simple language, as if teaching it to someone with no background in the subject.
Any gaps or jargon you fall back on reveal exactly where your understanding is incomplete.
The Four Steps
First, choose a concept and write its name at the top of a blank page. Second, explain it in plain language as if teaching a child, avoiding jargon.
Third, identify the gaps where your explanation breaks down or gets vague, then go back to source material to fill those gaps. Fourth, simplify further and use analogies until the explanation flows clearly and simply.
Why It Works Better Than Rereading
Passively rereading notes creates a false sense of fluency because recognizing information feels like knowing it.
Actively generating an explanation forces retrieval and exposes weak points immediately, which aligns with broader learning-science findings that active recall and elaboration outperform passive review for long-term retention.
Sources
- Wikipedia — background on Richard Feynman and learning by teaching
- Farnam Street — explainer on the four-step technique
- Encyclopaedia Britannica — biography of Richard Feynman
FAQ
Who created the Feynman Technique?
It's named after physicist Richard Feynman, known for his ability to explain complex physics simply, though the structured four-step method was formalized later by educators drawing on his teaching philosophy.
Do I need to actually teach someone else?
No — writing or speaking the explanation aloud as if teaching a novice works just as well; the key is active explanation, not necessarily having a real audience.
What if I can't simplify a concept at all?
That's the point of the technique — it means you've found a genuine gap in your understanding that needs more study before you can explain it clearly.
About the Author
We reference Wikipedia and Farnam Street and Encyclopaedia Britannica to explain the background and current understanding of this topic.
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