Ray Kurzweil
So that means that the twentieth century wasn’t a hundred years of change at today’s rate of change, because we’ve been speeding up. It was actually twenty years of change at today’s rate of change. Exponential change is quite explosive, so in the next century we’ll make about twenty thousand years of change at today’s rate of progress—about a thousand times greater than the twentieth century, and that century was no slouch for change.