The Feynman Technique: Learn Anything by Explaining It Simply
Named after the physicist Richard Feynman, this technique is built on one idea: if you cannot explain something simply, you do not really understand it yet. It is one of the fastest ways to turn fuzzy familiarity into real understanding.
The four steps
The whole method fits in four steps you can repeat for any topic.
- •Pick a concept and write its name at the top of a page.
- •Explain it in plain language, as if teaching a younger student. No jargon.
- •Notice where you get stuck or vague — that is the gap in your understanding.
- •Go back to your notes, fill the gap, and explain it again until it flows.
Why it works
Explaining forces active retrieval and exposes exactly what you do not know — instantly. Re-reading lets you fool yourself ("yeah, I know this"). Teaching does not: the moment you stumble, the gap is obvious and specific.
Make it a habit
After studying any topic, explain it out loud in two minutes without looking. Better yet, explain it to a real person or a study partner — their questions reveal gaps you would never spot alone.
Frequently asked questions
Do I need someone to explain to?
No — explaining out loud to yourself or in writing works. But explaining to a real study partner is even better, because their questions expose blind spots.
How is this different from just summarising?
A summary can be copied from your notes. The Feynman Technique forces you to reconstruct the idea in your own simple words, which is what reveals whether you actually understand it.