There have been a number of predictive clangers from people considered luminaries in the field of technology. Stuff like "we'll never need more that 640K of RAM". Humans have been doing this for centuries, and we'll continue to do it. While we're more advanced now than we've ever been, we're yet to think of our best ideas. I like the fact that we'll able to look back in another fifteen years and go "...didn't see THAT one coming".