I think it's fun to think about how Watson type intelligence will be at the average consumer's figertips (and affordable, to boot) in less that 20 years.
A quick look at the TOP500 supercomputers puts about a 10,000x increase in raw flops since 1993. Using that as a rough benchmark (a very rough one), we're looking at some impressive stuff in the next twenty years. It's not unreasonable to think that:
current consumer processor in FLOPS * 10,000 < Watson's grid's FLOPS
Naturally, that is a very rough estimate and has no scientific bearing at all.
