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じゃんけんの勝ち方(New Scientist)
http://www.newscientist.com/channel/being-human/mg19626352.700?DCMP=NLC-nletterbanner&nsref=mg19626352.700
How to win at rock, paper or scissors
· 22 December 2007
· Michael Brooks
· Magazine issue 2635
YOU know the score: paper wraps rock, rock blunts scissors, scissors cut paper... It's just a trivial way of making decisions about whose round it is at the bar, who gets the TV remote, that kind of thing. It's something like tossing a coin, right?
You couldn't be more wrong. Rock, paper, scissors (RPS) - also known as RoShamBo - is a startling game of strategy that reveals both the fickleness and the limitations of the human mind. There are RPS world championships worth big money, fiercely contested tournaments to find the best RPS computer programs, and heated arguments over which is the optimal RPS strategy. When millions of dollars have been made on the throw of a hand, it is hard to argue this is an insignificant debate. So, how do you win at RPS?
From a mathematical perspective, RPS is a function known as an intransitive relation, which ...
この記事はここで、終わっている。興味のある方はこの雑誌を読まれたい。
ところで、「じゃんけん」は日本起源かと思い込んでいたが、そもそもはエジプトの子供のゲームであったらしい(下記参照)。
http://www.urbandictionary.com/define.php?term=roshambo
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