Yup, definitely changed the game for me, and turned on my 'intuition' spidey sense, of whether I actually understood a concept. We did do a lot of exercises in

Yup, definitely changed the game for me, and turned on my 'intuition' spidey sense, of whether I actually understood a concept. We did do a lot of exercises in school, but they mostly just tested whether you can reliably apply a method that you were taught, rather than testing understanding.