Evolution selects for people who are predisposed to the pathology just noted because throughout most of human history keeping the group together conferred greater survival and reproductive advantages than any individual ‘being right’. If you were right, the group would eventually figure it out and it was more important that the group remain intact than you be right. So, our brains developed to tend to consciously acknowledge the kind of realities that threatened group cohesion when most of the group was ready to come to the same conclusion. Anonymous, board post 21st June 2005 ‘Comparative Apologetics’