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Three hand gestures that are universal though are those played in Rock, Paper, Scissors. I've found that everywhere I go, people know how to play this game. However, people in Japan play this game ALL THE TIME. Rock, Paper, Scissors in Japan is seemingly how every decision is made for non important decisions. I can't tell you how many times my students have played Janken (one of the official names for the game besides rochambeau) to decide who gets to do what in class.
I never thought there was much skill to this game but after being trounced by a few students, I'm starting to become a believer. After a little more time abroad, I met enter the USA Rock Paper Scissors League.
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