[bobbyi]

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Everybody saying the rule is legal needs to read about and understand why the rules exists.

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Read about this where? Nobody really knows the origins or this rule. I would assume that it was invented just out of a philosophical notion that a "showdown" involves showing down all the hands, so you are entitled to see them all if you really want to. There are a lot of other popular theories, but I've never see any solid evidence for any of them being the true origin. The "collusion detection" mentioned in the thread is particularly silly since this rule doesn't even make sense to be used that way since if you are colluding to build the pot, you would just always have the guy without the real hand fold for the last bet and the rule then doesn't let you see his hand.