DanArmak comments on "Stupid" questions thread - Less Wrong Discussion
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How do people construct priors? Is it worth trying to figure out how to construct better priors?
I don't think it's useful to think about constructing priors in the abstract. If you think about concrete examples, you see lots of cases where a reasonable prior is easy to find (eg coin-tossing, and the typical breast-cancer diagnostic test example). That must leave some concrete examples where good priors are hard to find. What are they?