void*p writes "The Economist is running an article about a computer game developed by Bruno Galantucci, a cognitive scientist at Yale. In the game, two players must find each other in a four-room building by making a single move. The catch is that the players can only communicate using invented symbols. Surprisingly, Galantucci found that teams not only communicated effectively, but also developed startlingly different sets of symbols. Galantucci's 2004 dissertation on the subject (PDF) can be found online."
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