Copyright 2018 NPR. To see more, visit MELISSA BLOCK, HOST: The economist John Maynard Keynes once wrote an essay titled "Economic Possibilities For Our Grandchildren." It was 1930. And in the essay, he made a startling prediction. Keynes figured that by the time his children had grown up, basically now, people might be working just 15 hours a week. David Kestenbaum with our PLANET MONEY team tried to sort out where Keynes went wrong. DAVID KESTENBAUM, BYLINE: Since the essay was called "Economic Possibilities For Our Grandchildren," we thought we'd check in with Keynes's grandchildren all these years later and see how many hours they ended up working. It turns out Keynes did not have any kids, so we did the next best thing. NICHOLAS HUMPHREY: My name is Nicholas Humphrey. KESTENBAUM: And your relationship to John Maynard Keynes... HUMPHREY: OK. Yes. I'm Maynard Keynes's sister's grandson. KESTENBAUM: You're the closest thing we have to his grandkids. HUMPHREY: Yes. We're kind of ghost
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