My fellow pro-growth/progress/abundance Up Wingers in America and around the world: Alan Greenspan, the former Federal Reserve chair who died Monday at 100, was a key policymaker during the period I call Up Wing 2.0. From roughly 1995 to 2000, the information-technology revolutionâPCs, software, semiconductors, and the commercial internetâappeared to reverse the post-1973 productivity slowdown, what I call âthe Great Downshift.â Productivity growth accelerated, internet startups and...