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      Advocate for Science

      Scientific American August 1984

      Computer Recreations, August 1984

      A computer trap for the busy beaver, the hardest-working Turing machine

      • By A. K. Dewdney

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      More in the August 1984 issue of Scientific American
      • Cooperative Breeding in the Acorn Woodpecker
      • Fiber Optics in Plants
      • The Great Temple of Tenochtitlán
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