You say that the entire world wants an iPad.  I disagree. I think this will appeal to a specific (but fairly common) kind of computer user. Namely, the sort of person who really doesn't know what they're doing on a computer, and only uses their PC for very basic tasks.  This kind of person will be able to replace their laptop (or even their desktop) with an iPad, and I think it will be a fantastic solution for them.<p>The problem, though, is that this "magical screen" probably won't be very efficient for getting work done. Which means most people won't be able to replace their computers. And I think it's going to be hard to convince these people that they need a so-called "middle device".<p>EDIT: I should also add that I think the appeal will be much broader once publishers make digital books and textbooks that are actually superior to their paper counterparts. But that might take years.