I assume you only really use it for notes? When the professor puts notes on the overhead, you just whip out your laptop and copy them down? Do you even carry a pencil and paper? Like, do you just bring your MacBook and text books, or do you even bring a binder? What happens if there's a handed-out piece of paper to complete? What happens after that? Do you just print the notes out when you get home? Doesn't that get expensive? Would a laptop in chemistry class be effective, or would all the subscripts be cumbersome?