A simple way to predict the future is to step back into the past. 5 years ago? Aside from the whole tablet/smartphone revolution, not much. 10 years? Much faste

A simple way to predict the future is to step back into the past. 5 years ago? Aside from the whole tablet/smartphone revolution, not much. 10 years? Much faster computers, web 2.0, Facebook, Gmail, the whole social media thing. 20 years? The entirety of the modern web. MMO games. Global warming. Cloning. Cell phones. Basically technical progress moves quite fast in the medium term but slower than you'd expect in the short term, except with surprises. (Nobody saw tablets coming. A move away from the web, to native apps? In this day and age?)