EXTRATERRESTRIAL & NON-HUMAN INTELLIGENCE
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    extraterrestrial intelligence, likelihood of

    Take Two
    "Personally, I don't think there's intelligent life on other planets. Why should other planets be any different from this one?"
       – Bob Monkhouse, English comedian
    Frank Drake, one of the early pioneers of SETI, devised a formula – the so-called Drake Equation – to help assess the number of other races in the Galaxy who might be attempting to communicate with other stars at any given time. This formula, however, can produce a very high number or a number close to zero depending on the initial assumptions made.


    References
    1. Trefil, James. Are We Unique? London: Wiley (1997).
    2. Zuckerman, Ben, and Hart, Michael H., eds. Extraterrestrials: Where Are They? 2nd ed. Cambrdige, England: Cambridge University Press (1995).
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       • EXTRATERRESTRIAL AND NON-HUMAN INTELLIGENCE




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