If you follow news out of Silicon Valley, it’s easy to get the impression that we’re living through an era of unprecedented technological change. The modern smartphone is less than a decade old, yet it has already become ubiquitous in American society and allowed Apple and Google to become two of the most valuable companies in the world. And companies like Uber and Airbnb are bringing the internet revolution to industries as diverse as taxicabs and hotels.
Yet it’s hard to find evidence of rapid progress in the nation’s economic statistics. To the contrary, after the productivity of American […]