From my long-time/college friend Chris comes this video that explains the “Monty Hall Problem:”
Now, just to give you an idea about what kind of geek, arguer, and non-science/non-math kind of guy I was: I recall having long and even heated arguments about this topic among the seven other similarly inspired geeky folks I lived with on Davenport in Iowa City as an undergrad. And I even remember this carrying on into my MFA program. One night, a friend of mine and I tried to test this theory in the only way a couple English/creative writing types could have managed: we acted it in little table-top game of “Let’s Make a Deal,” playing it out 100 times. And damned if switching didn’t win 66 times.