When you make an account online or install an app, you are probably entering into a legally enforceable contract. Even if you never signed anything. These days, we enter into these contracts so often, it can feel like no big deal. But then there are the horror stories like Greg Selden's. He tried to sue AirBnB for racial discrimination while using their site. But he had basically signed away his ability to sue AirBnB when he made an account. That agreement was tucked away in a little red link, something most people might not even bother to click through. But, it wasn't always like this. On today's show, we go back in time to understand how the law of contracts got rewritten. And why today, you can accept a contract without even noticing it. This episode was hosted by Emma Peaslee and Jeff Guo, and was produced by James Sneed. It was edited by Jess Jiang and fact-checked by Sierra Juarez. It was engineered by James Willetts. Alex Goldmark is our Executive Producer. Help support Planet Money and get bonus episodes by subscribing to Planet Money+ in Apple Podcasts or at plus.npr.org/planetmoney. Always free at these links: Apple Podcasts, Spotify, Google Podcasts, NPR One or anywhere you get podcasts. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy

When it comes to big questions about the economy, we're still kind of in the dark ages. Why do some economies grow so much faster than others? How long is the next recession going to last? How do we stop inflation without wrecking the rest of the economy? These questions are the domain of macroeconomics. But even some macroeconomists themselves admit: While we have many theories about how the economy works, we have very few satisfying answers. Emi Nakamura wants to change all that. She's a superstar economist who is a pioneer in the field of "empirical macroeconomics." She finds clever ways of using data to untangle some of the oldest mysteries in macroeconomics, about the invisible hand, the consequences of government spending, and the inner workings of inflation. Recently we called her up to ask her why the economy is so difficult to understand in first place, and how she's trying to find answers anyway. She gets into all of that, and how Jeff Goldblum shaped her career as an economist, in this episode. This show was hosted by Jeff Guo and Nick Fountain. It was produced by Dave Blanchard with help from Sam Yellowhorse Kesler. It was engineered by Josephine Nyounai and fact checked by Sierra Juarez. Keith Romer edited the show. Alex Goldmark is our executive producer. Help support Planet Money and get bonus episodes by subscribing to Planet Money+ in Apple Podcasts or at plus.npr.org/planetmoney. Learn more about sponsor message choices: podcastchoices.com/adchoices NPR Privacy Policy