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      Knowledge is Power

      Scientific American May 1980

      Mathematical Games, May 1980

      What unifies dinner guests, strolling schoolgirls and handcuffed prisoners?

      • By Martin Gardner on May 1, 1980

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      More in the May 1980 issue of Scientific American
      • Letters to the Editors, May 1980
      • The Chemical Evolution of the Earth's Mantle
      • The Role of Gravity in Quantum Theory
      View Full Contents
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