^ this.

It may be true that if you write about something, you will understand it better. Sounds logical, you spend more time with a topic, likely it won't confuse you or make you forget it. But is it also true, that this is efficient? Maybe if you don't write about it, instead just reread it, you can understand it even better, in less time?

I think it's because of how memory works so it's like asking "okay but what if I had a different brain" I wish. Retrieving what you learn is the best way I know to remember what you're learning, so writing about it would help. Unless everything I was told is wrong?