More and more, it is recognized that the earliest humans were as smart from their beginning, as they are today. They didn't need to learn to be smart. What they did need to learn was all the other things that make civilzation successful. The tough conditions and lack of accumulated, useful knowledge were their handicaps. Seems, they were faced w a hand to mouth, day to day existence as the staus quo for thousands of yrs. If they don't know any better, they don't do any better - kind of like many people today. Its our nature, as it was theirs.
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