For the past 20 years, the growth in US productivity has been sluggish at about 1.2%, compared to the 3% pace at which it grew from the mid-1990s to the mid-2000s. Chicago Booth's Chad Syverson says that if US productivity hadn't slowed, the US economy would be bigger to the tune of $25,000 per person. So what's happening to productivity, and is it finally about to turn the corner?