@rmkelly (2) I think what needs vetting is if confirmation bias is such a trait. We argue it is because as a species that evolved to linguistically be interdependent, it would be detrimental to our own developing sense of self, acceptance by the tribe and potential mates to have stories about ourselves that aren't validated in the real world. Our theory is that we instinctually look for proof to support the stories we believe about ourselves manufactured by our minds.
See (3)