Why "utility fogs" could be the technology that changes the world

Arthur C. Clarke is famous for suggesting that any sufficiently advanced technology would be indistinguishable from magic. There's no better example of this than the ultra-speculative prospect of "utility fogs" — swarms of networked microscopic robots that could assume the shape and texture of virtually anything. »8/08/12 1:18pm8/08/12 1:18pm