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.)
A philosophy degree is definitely better than nothing. But I should have used that time to major in something more lucrative.
Potentially, but you may also have lost significantly in A)happiness and B)rationality. I think this may be more an issue of Harmful Options than actual significant utility loss.