Perhaps, tribal groups during the times when humans were rapidly evolving, did better when they sired offspring that comported to an optimal extent with the status quo.
Groups that were too 'genetically' predisposed to rigidity in ways of thought in an environment with random changes didn't fare as well groups that weren't. And groups that had a surplus of free thinkers might have been too fractious to have competed successfully.
Presumably the current genome fluctuates around the 'optimal' value appropriate for the late stone age these days.
Groups that were too 'genetically' predisposed to rigidity in ways of thought in an environment with random changes didn't fare as well groups that weren't. And groups that had a surplus of free thinkers might have been too fractious to have competed successfully.
Presumably the current genome fluctuates around the 'optimal' value appropriate for the late stone age these days.
