Drake Equatio2 - Drake Equation: How Many Of Them Are Out...

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Drake Equation: How Many Of Them Are Out There? f i = average fraction of life-bearing planets evolving at least one intelligent species. Is intelligence necessary for survival? Will life on a planet naturally develop toward more complexity and intelligence? Those are questions that must be answered before "reasonable" guesses can be put in for f i . Take note that on the Earth, there is only one intelligent (self-aware) species among millions of other species. (Perhaps, whales, dolphins, and some apes should be considered intelligent too, but even still, the number of intelligent species is extremely small among the other inhabitants of our planet.) Sharks have done very well for hundreds of millions of years and they are stupid enough to eat tires! Bacteria have thrived on the Earth for billions of years. Being intelligent enough to read an astronomy textbook is very nice but it is not essential for the mandates of life.
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This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.

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