Learn through the Feynman Technique with Midi. Named after Richard Feynman, widely regarded as one of the greatest physicists of the modern era, the Feynman Technique tests understanding through explanation. If you can explain a concept simply enough for a complete beginner to follow, you probably understand it. Pick any topic and explain it to Midi. Instead of teaching you, Midi will ask curious questions whenever something doesn't make sense, revealing the places where your knowledge can grow.