Progress in Technology is Exponential, Not Linear
TED | YouTube
Ray Kurzweil | TED
If you really look at the power of exponential growth, you'll see that these things are pretty soon at hand.
My main message is that progress in technology is exponential, not linear. Many -- even scientists -- assume a linear model, so they'll say, "Oh, it'll be hundreds of years before we have self-replicating nano-technology assembly or artificial intelligence."