The easiest examples are typically business examples, but there's always the risk of the thing people attributing their success to not being the actual cause of their success. ("I owe it all to believing in myself" vs. "I owe it all to sleeping with the casting director.")
I think the cleanest example is Buffet and Munger, whose stated approach to investing is "we're not going to be ashamed of only picking obviously good investments." They predated LW by a long while, but they're aware of the Heuristics and Biases literature (consider this talk Munger gave on it in 1995).
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.