When I was in high school in Montréal, waaay back in 1995, our French teacher would tell us “qui écrit, lit deux fois” (“the one who writes, reads twice”), as a motto to encourage us to copy the texts we read via handwriting, instead of really just reading. And I can attest that it works really well. I remember a lot more when I write. On the surface, it’s slower; but in really, if I took the same amount of time to only re-read the same material without copying, I still wouldn’t remember as much.