What even is "the economy"? And how do you measure it? Our path out of the economic darkness and into the light has been guided in large part by one single statistic: GDP. This week: the origins, history, and problems with the economic indicator to rule them all. | At this Summer School, phones ARE allowed during class... Check out this week's PM TikTok! | Listen to past seasons of Summer School here. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy