On the whole "tablet will replace the PC someday" thing: no, not exactly. What will most likely happen is a central computing core will eventually be powerful enough to serve as a "tablet" as well as to be plugged into a suite of "PC" peripherals like a full sized keyboard, accurate pointing device, external storage, and full size monitors. There will never come a time when all (or even most) of the functions people currently perform on a "PC" can adequately be performed on only a "tablet" minus some or all of those external peripherals. It's not a matter of computing power, it's a matter of how large...