There's a lot of really good, although not well-known, books that are really almost impossible to get hold of.

Did you see that poof of dust come up when they ran by? That's how dry the ground is. The most tender part of the horse is from the knee to the hoof. The hard ground makes it harder for them to run. It's just physics.

That is the way the process worked out.

Paper and leather binding for books are greatly appealing. It's going to be a transitional period. A fellow growing appreciating books might never buy an electronic book. But someone growing up using a game boy will find using an e-book is a very natural way of reading. And they'll find it a lot more attractive than carrying around 50-pound pack of school books.

For publishers and authors, this means that electronic books and periodicals can now quickly grow to become a vast and lucrative new industry.

We've been predicting this will overtake print books in about 10 years. In the first six months it will be a very small part of Steve's business. But three to five years out we see a billion-dollar marketplace.