So a prediction that we would have tiny computers that we carried everywhere in our clothes and bodies is wrong because instead of carrying them in our clothes, we carry them in our pockets?  Kurzweil's predictions relate to the level of computational power for a given cost and what we can do with that power.  Just because my turn-by-turn directions come from my phone instead of a wrist-strap doesn't make those predictions less wrong.<p>In the absence of iPods or cell phones, it's likely that sewn-in or wearable computers would be more attractive.