If you assume that a bubble starts and ends at the same place[0] then a bubble just serves to transfer wealth from one group of people to another. If you think

If you assume that a bubble starts and ends at the same place[0] then a bubble just serves to transfer wealth from one group of people to another. If you think you know something that allows you to be on the receiving end, great, you might even be right. Otherwise you're just gambling. [0]: Simplifying somewhat since some assets like stocks, homes, etc. have upward trends so the bubble probably ends slightly higher than it started.