No, I don’t mean switch from Coke to Pepsi, nor from math to linguistics. I am not even referring to the Monty Hall problem, though that seems more likely under the circumstances. I am talking about the fascinating two-envelope paradox.

You may or may not be familiar with this truly puzzling two-envelope paradox. If you don’t know it, watch this video. If, on the other hand, you do know it, watch the video anyway, just so you see the crystal-clear explanation by יובל נוב, a.k.a. Yuval Nov.

Note that I didn’t promise an easy explanation, just a clear one. I did say that the paradox is truly puzzling, and it is. So it may take a couple of passes to appreciate the clarity and accuracy of the explanation. Is it counterintuitive? You be the judge.

יובל נוב

Categories: Math