Today, Fermi's query has attained the status of a cosmic statute, especially among theorists convinced that intelligent life is witheringly rare. Proponents of the Anthropic Cosmological Principle, for instance, believe the universe shows unmistakable evidence of existential "fine tuning," presumably to allow the existence of human life. (An engaging alternative is that the universe is as we perceive it because, if it were otherwise, its history would have precluded our evolution and we simply wouldn't be here. More recently, cosmologists have speculated that we might inhabit a "multiverse" comprised of an infinite number of universes, all governed by variations of the laws of physics as we know them. If such is the case, we shouldn't be especially surprised to find that physical laws seem "fine-tuned" for our existence, as our universe would be one of many: a cosmic jackpot well within the realm of probability.)
Friday, April 25, 2008
A teaser from my new SETI.com offering, "Fermi's Legacy":
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