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An argument often given for why Earth couldn't host another form of life is that once the life we know became established, it would have eliminated any competition through natural selection. But if another form of life were confined to its own niche, there would be little direct competition with regular life.

Paul Davies

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Paul Davies
Age: 78
Born: 1946
Born: April 22
Cosmologist
Physicist
University Teacher
Writer
London
England
Paul Charles William Davies
Littles
Direct
Confined
Little
Couldn
Selection
Would
Natural
Regular
Life
Often
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Established
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Argument
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Earth
Became
Niche

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