In middle and high school when I was reading my way through my parents' fantasy and scifi collection, I got to a point where I'd just make a note of the page nu

In middle and high school when I was reading my way through my parents' fantasy and scifi collection, I got to a point where I'd just make a note of the page number when I set the book down and was able to recall it next time I sat down to read. I don't remember if I kept that up through college, but I've been reading pretty much exclusively on a kindle since 2010 or so.