"All scientists agree that evolution has occurred-that all life comes from a common ancestry, that there has been extinction, and that new taxa, new biological groups, have arisen. The question is, is natural selection enough to explain evolution? Is it the driver of evolution?"

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Mr L Prosser was, as they say, only human. In other words he was a carbon-based life form descended from an ape. More specifically he was forty, fat and shabby and worked for the local council. Curiously enough, though he didn't know it, he was also a direct male-line descendant of Genghis Khan, though intervening generations and racial mixing had so juggled his genes that he had no discernible Mongoloid characteristics, and the only vestiges left in Mr L Prosser of his mighty ancestry were a pronounced stoutness about the tum and a predilection for little fur hats.

— Douglas Adams