I still memorize things like that to an extent. When I was in college (undergrad, I plan for more, but in the U$ academic research has extra challenges), I almost never studied. I made cum laud honors, I have this image in my mind of like a giant mesh ball of connections, each node being a concept, and when sitting in lectures as long as I could reword what the professor was saying in my own way I never had to look at the notes again. (good thing too, they were often incoherent, much as the better part of what I post.
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to be lost I would have needed to know where I was going
"For success in science or art, a dash of autism is essential"
Hans Asperger