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.)
What if I've already met enough people? Dunbar's number is not infinity, so meeting people has an opportunity cost.
I'm guessing the real problem was his lack of social skills, not his nerdiness.
Are the people you know now awesome and in sufficient variety and number? If so, I can totally understand not needing to know more.
His problem was indeed his lack of social skills, but it was signalled by his nerdyess. The point here is not that there is a 1:1 comparison from these signalling characteristics to the end result, but that enough of the population thinks this way for it to alienate a large portion of the population when one signals in such a manner. That portion of the population includes many interesting people and should not be cast aside lightly. My life for example improved dramatically when I changed my signalling characteristics into a more confident and visually appealing style.