I would say that reading non-fiction books/ebooks is a waste of time if not actively dog-earing and annotating pages. Reading a book front to back, committing

I would say that reading non-fiction books/ebooks is a waste of time if not actively dog-earing and annotating pages. Reading a book front to back, committing the important stuff to memory, and leaving the book unmarked, is a fantasy as far as I'm concerned.