How Claude Shannon used information theory to cheat at Vegas roulette

Depending on how much you’re betting and winning dealers will tolerate card counting. I have a friend who is really good at it and would double up with a buddy of his that was equally as good. They were playing blackjack at a casino once and another patron kept playing a certain way that was messing up their own plays, after the patron left the dealer told them something like: “Man that guy really fucked up your guy’s hands” in a friendly way that revealed he knew they were counting. They played some more and made back some money before they left.

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