Monday, November 2, 2009

Cognitive Dissonance

From a post at Volokh:
The basic lesson of Bayesian analysis is that you can learn only from information that disconfirms some part of your current belief set. But of course the natural tendency of the mind is to minimize cognitive dissonance by accepting confirming evidence and rejecting disconfirming evidence, and that tendency is emphasized when beliefs get to be badges of group membership. This is a deeply unhealthy tendency, and it tends to defeat one of the basic evolutionary strategies of homo sapiens, which Karl Popper summed up as “letting our beliefs die in our place.”
Indeed. Indeed.

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