If something is your profession, meaning your job, then why would you need a book to study it?
-“Call Doctor Johnson to the ER right now”
-“Alright, give him 20 minutes to read his book on brain surgery and then he’ll be there!”[/quote]
Though imagine how awesome it would be if you could learn stuff from books in a matter of hours in real life. (Unless you forget it the next day…)