It looks like they did a lot of research about how to best layout and setup a course in a book It looks to me like they try to cram as much stuff-that-looks-li

It looks like they did a lot of research about how to best layout and setup a course in a book It looks to me like they try to cram as much stuff-that-looks-like-content in as possible so they can justify charging $100+ for the book. The disease is particularly bad at the first-year level where the publishers need to compete against dozens of other damn-near-identical textbooks; this is why every first-year physics textbook I know weighs half a ton and has lots of pretty pictures, whereas the actual content could probably be whittled down to a hundred pages or so.