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Natural Selection Continues.
Evolution continues.
The fact that environmental goals are altered is, to a very large extent, irrelevent.
What is important in evolutionary progression is not what people (however unlikely) survive, but what genetic traits are passed on through generations, and the base trends these result in.
Selection is still a black box process. All we know is that in a short recent time, people are getting taller (gradually... could be diet related) and that incidence of some malformations is increasing due probably to tobacco and other pollutants.
In short, #2 is closer, but Americans are not a separate species. The species homo sapiens sapiens continues to spread about the earth; its population grows and new generations live. Nationality as a marker is an irrelevence.
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Man Alone
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Abstainer: a weak person who yields to the temptation of denying himself a pleasure.
Ambrose Bierce, The Devil's Dictionary.
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