Several weeks ago I wrote a heavily upvoted post called Don't Be Afraid of Asking Personally Important Questions on LessWrong. I thought it would only be due diligence if I tried to track users on LessWrong who have received advice on this site and it's backfired. In other words, to avoid bias in the record, we might notice what LessWrong as a community is bad at giving advice about. So, I'm seeking feedback. If you have anecdotes or data of how a plan or advice directly from LessWrong backfired, failed, or didn't lead to satisfaction, please share below.
So, obviously that list isn't exhaustive, because there are more ways to split interactions than public/private, but in an attempt to add meaningful new outlooks:
4) Speak about your weaknesses openly when in public, and deny them in private.
Many high status individuals are much harsher, demanding, arrogant, and certain in private than in public. I think this is a result of -- when you don't know the target well -- not knowing who you will have to impress, who you have to suck up to, and who is only useful when they get you the thing you want.