Introduction

This is planet money summer school, the investing education that goes in one ear then stays between both years. A financial bubble can form in pretty much anything that can be bought and sold. In almost every bubble, there seems to be some form of innovation that forces people to rapidly debate the creation of new economic value. And for any one specific bubble, we might even be able to guess the reason. But we don't have a good answer as to why bubbles happen in general. Coming up, we are going to listen to a classic episode from the indicator, which his planet money's daily show.