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I disagree that conservatism is a major flaw of human thinking, or even a flaw at all. I would argue that conservatism is one of the core principals of science. Although the quantity and quality of data sufficient to change one's views could be (and frequently is) debated, a healthy amount of stability and skepticism is required for science to be efficacious.

A similar argument could be made for conservatism's relationship with social structures. Rapidly changing social structures leads to unpredictable futures, which can lead to economic insecurity at the individual level.