Ah, yes! I forgot. My papyrus leaves were starting to decintagrate, and my animal hides were starting to smell. That wooden printing press was giving too easy of an access to quality books. Yeah, stone tablets! That's the way to do things. Ereaders won't be replacing paperbacks in your lifetime, just as phones haven't become our primary method of talking. And they won't. If people want to carry loads of books in their ereader from place to place, so be it. It's an improvement new technology brings.