i second this. i recommend, for anyone who is interested, reading their write-ups on the ea forum to get a good intro on the problem (and how they work):

- https://forum.effectivealtruism.org/posts/fd96FtLFACeAshqJP/...

- https://forum.effectivealtruism.org/posts/ErKzbKWnQMwvzRX4m/...

or my interview with lucia coulter, one of the co-founders:

- https://www.erichgrunewald.com/posts/interview-with-lucia-co...