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21 Jan 08

80. Robots Evolve And Learn How to Lie | Robots | DISCOVER Magazine

  • Floreano and his colleagues outfitted robots with light sensors, rings of blue
    light, and wheels and placed them in habitats furnished with glowing “food
    sources” and patches of “poison” that recharged or drained their batteries.
    Their neural circuitry was programmed with just 30 “genes,” elements of software
    code that determined how much they sensed light and how they responded when they
    did. The robots were initially programmed both to light up randomly and to move
    randomly when they sensed light.
  • By the 50th generation, the robots had learned to communicate—lighting up, in
    three out of four colonies, to alert the others when they’d found food or
    poison. The fourth colony sometimes evolved “cheater” robots instead, which
    would light up to tell the others that the poison was food, while they
    themselves rolled over to the food source and chowed down without emitting so
    much as a blink.
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