This is a repository for major, life-altering mistakes that you or others have made. Detailed accounts of specific mistakes are welcome, and so are mentions of general classes of mistakes that people often make. If similar repositories already exist (inside or outside of LW), links are greatly appreciated.
The purpose of this repository is to collect information about serious misjudgements and mistakes in order to help people avoid similar mistakes. (I am posting this repository because I'm trying to conduct a premortem on my life and figure out what catastrophic risks may screw me over in the near or far future.)
But "people who should be ignored" and "people who don't care how you look" are hardly identical sets. If anything, they're more likely to be opposed than overlapping. The sort of people you want to deal with are usually those with enough merit to have choices in who they interact with, and thus they're naturally more picky.
I'm not against CARING HOW YOU LOOK. I'm against the view that caring how you look means you need to wear a suit or polo shirt and slacks or whatever the generic high-class look is.