AUTHOR: Sarab DATE: 10:40:00 AM ----- BODY:

"General laws of growth or the accidents of genetic drift couldn't possibly explain the precise arrangements of muscles and bones and tendons that give us a usable hand — or, for that matter, explain why something like the apple has seeds inside it as opposed to something else. For any biological structure that looks as if it's engineered for a purpose, natural selection is the only known scientific explanation, because it's the only physical process that can result in complex systems that achieve some improbable goal....

Some traits you shouldn't use natural selection for; some traits you have to use natural selection for. A lot of the work of biology, the day- to-day work, is examining complex features of organisms and trying to figure out whether they could have arisen as a by- product of something else or show clear-cut signs of having been designed for some purpose."

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