If we imagine society as noise of randomly colored dots, for example, blue dots can represents people currently connected to Facebook. There are so many blue dots in current society, that highly intelligent person could easily predict this even 20 years ago, right? Well, problem is, this color first appeared couple of years ago, there was no blue color among dots we see *at all*. Breakthrough events that forms society like this comes like explosion, and brings new colors that was never seen before. We can predict and imagine only in colors we know, not in colors we've never seen.