Guest guest Posted July 16, 2011 Report Share Posted July 16, 2011 http://news.bbc.co.uk/2/hi/science/nature/7733372.stm We have no way to know what human life was like back then, but I would venture to guess that things were pretty horrific. That would probably explain why our anxiety circuits fire off so easily. " Anxious " and " hypersensitive " people who could anticipate and avoid these kinds of troubles would seem to have been more likely to survive and propagate in such a brutal and lawless environment, and thus here we are, their descendants. Quote Link to comment Share on other sites More sharing options...
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