You don't always have to have an e-book. You can have a real book. I'd like to see the old way maintain.
People should really horde their Blu-rays like old comic books and baseball cards. Because they're really beautiful, and will be worth something if you like movies as I do.
You're not a historian, but most historians will tell you that they make very discrete judgment as to what facts to omit in order to make their book into some shape, some length that can be managed.