That is the topic of my latest Bloomberg column, here is the last bit:
I don’t mean to say that technological stagnation is a good thing. But sometimes the biggest advances lead to more tragedy than comfort, especially in the short run, before we learn how to adjust to their challenges. To paraphrase Peter Thiel, they promised us flying cars, and what we got was a bunch of stoned characters, and more than 140 of them. Beware the end of the productivity slowdown.
Do read the whole thing.