I agree.
I can not remember who said we must have more output (create/peoduce) than input (consuming information or products)
I can not remember who said we must have more output (create/peoduce) than input (consuming information or products)
The best way to study is to write the main ideas in your own words without peeking at the material. To grasp the material you have to spend a lot of time solving problems, which is you producing a logical sequence of justified steps related to what you consumed (theory).
Feynman method is also a creative process where you produce a simplified explanation of what you want to learn relating it with common knowledge.
We need space to understand things. Al this remembers me of the concept of FOCUS-DIFFUSE found in the book "A Mind for Numbers".