Evolutionary explanations are often speculative just-so stories with no basis in actual genomic research. Nobody ran a hierarchical clustering algorithm over t

Evolutionary explanations are often speculative just-so stories with no basis in actual genomic research. Nobody ran a hierarchical clustering algorithm over the human genome, inspected the dendrogram, and then found meaningful gene expressions that indicate confirmation bias somehow. The reality is confirmation bias is probably deeply rooted in many other elements of human psychology. My (completely worthless) conjecture is that your "opinions" are deeply associated with your own sense of self-identity and self-worth, and therefore they register as very much worth protecting, regardless of external data. Opinions also often overlap with tribal affiliations, which makes them even more deeply rooted in evolved primate cooperative behavior, and therefore even more worth protecting.