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A comment on Why extraterrestrial life may not seem alien. Parent comment

Re:Why extraterrestrial life may not seem alien by rendall on Monday August 02, 2021 @02:45PM (#28040942)
> Doesn't it intuitively seem like the life by definition would evolve out of any particular niche - say 1,000 Kilometers under the surface - to other areas?

Other areas that are similar, sure. But if you're asserting that we can be confident there are no subterranean mantle-creatures because we don't see any wandering about out here, I don't think it's a good argument, for the same reason we can't go down there ourselves and look

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Re:Why extraterrestrial life may not seem alien by rendall on Monday August 02, 2021 @04:21PM (#28042100)
If mantle-creatures were to exist, they would have a far, far greater volume of living space to expand into than we surface-dwellers do. Maybe they just haven't gotten around to us yet, for the same reason we don't have any large cities in the antarctic.
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