Human cognition was shaped not in laboratories but in tribes, where social cohesion mattered more than accuracy. Under such conditions, natural selection rewarded socially adept coalition-builders rather than truth-seekers. Intelligence evolved not merely to understand reality, but to navigate status hierarchies within it. Modern cognitive science has merely mapped the machinery beneath this condition: confirmation bias, framing effects, anchoring bias, availability bias, fluency bias, perseverance bias, and identity-protective cognition all demonstrate the same uncomfortable truth. The mind is not a pristine instrument of logic intermittently corrupted by bias. Bias is built into the architecture itself.
Yet, one may ask, if human cognition is so profoundly biased, tribal, and irrational, how does reliable knowledge emerge at all?