Good points.

FEYNMAN learning strategy in THREE points:
1. Continually ask "Why?"
2. When you learn something, learn it to where you can explain it to a child.
3. Instead of arbitrarily memorizing things, look for the explanation that makes it obvious. pic.twitter.com/tcVcrmuHLT

— Richard Feynman (@ProfFeynman) January 10, 2019