What are you watching on Youtube, right now? Part IV

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^^ Interesting I will be in Tokio next week. While now in Kyoto I usually spend close to a 1000 yen for lunch. I guess one needs to know the proper places where to go...
 
Oh. I thought he was quite coherent, there.

Individualism... motor cars... blah de blah blah blah.
 
^That's what most people think on first encountering the problem.

But it isn't true.

"By opening his door, Monty is saying to the contestant 'There are two doors you did not choose, and the probability that the prize is behind one of them is 2/3. I'll help you by using my knowledge of where the prize is to open one of those two doors to show you that it does not hide the prize. You can now take advantage of this additional information. Your choice of door A has a chance of 1 in 3 of being the winner. I have not changed that. But by eliminating door C, I have shown you that the probability that door B hides the prize is 2 in 3.'

http://en.wikipedia.org/wiki/Monty_Hall_problem#Simple_solutions

A lot of people will argue about it, though, till they're blue in the face.
 
It's a good problem, isn't it? I'm not sure I can explain it any better than wiki, though.
 
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