“[Common sense] does not depend on reason itself. People don’t have to have any understanding of why they believe what they believe for what they believe to be usefully true.”
I think that has a lot to do with my general distrust of common sense. However, the post as a whole (here) poses a challenge that I should take up at some point (hopefully on this blog)–that is, why has common sense lasted, if it’s not informative or causes people to make systematic errors? There’s probably a pretty basic evolutionary psychology argument, but worth thinking about.