Short memo : things for further research (Patreon)

1. Stacked knowledge : We learn new things from things we already knew.

2. Primary knowledge, secondary knowledge and more...what are they?

3. Speed reading...pros and cons

4. Understanding : is it just another type of remembering?

5. What exactly is observation skill?

6. Meditation : what exactly it is?

7. Get better by do nothing. Time interval. Rest stage.