The book has very specific qualities. Let's say in 2300 they discover the physical book, after having lived with the digital book for several hundred years. They'll be able to say, "Look at all the cool stuff you can have in a real book and how different it is. " The differences are manifold.
A craven can be as brave as any man, when there is nothing to fear. And we all do our duty, when there is no cost to it. How easy it seems then, to walk the path of honor. Yet soon or late in every man's life comes a day when it is not easy, a day when he must choose. (Maester Aemon)