I’ve sold most of my art books. I don’t know if this was the intent of Open Door’s Alan Oppenheimer or not, but it was the result of him providing me with Art Authority ($9.99). My iPad is no coffee table book, but that’s a good thing. As Apple touts the pencil thinness of the iPad Air, coffee table books start to look more and more arcane. What coffee table books have over the iPad is the size of their canvas. But when one actually visit museums, art books seem a bit of a travesty of pure form. Books not only fail to represent scale well, they don’t reproduce paintings or drawings with anything like fidelity to the originals; and they offer no way to experience media or paint thickness or pen impression. And when it comes to sculpture they are, of course, overwhelmingly flat (not to dismiss pop-up books).