Prediction market sites allow users to put money on everything from the war in Iran to the winner of the Super Bowl. But where did these markets come from? And what can that history tell us about where they might be going? Today on the show, how betting on popes and presidents long ago planted a seed for a “terrorism market” in the early 2000s, and how those early prediction markets shaped the industry that has taken hold today.Guests:Koleman Strumpf, economics professor at Wake Forest UniversityPaul Rhode, economic historian at the University of Michigan.Robin Hanson, Associate Professor of Economics at George Mason University and systems architect for the Policy Analysis MarketRobert Forsythe, Professor of Finance at Wayne State University and co-founder of the Iowa Political Stock MarketTo access bonus episodes and listen to Throughline sponsor-free, subscribe to Throughline+ via Apple Podcasts or at plus.npr.org/throughline.