A lot of these suggestions seem really...douchey (for lack of a more precise term). I guess theoretically you can have a great social impact being a hedge fund quant or a startup founder, but the more traditional goal of those careers (and the people who undertake them) is making yourself filthy stinking rich.

I know the 80,000 hours people have this idea of earn-to-give, but do they have any stats on how many people actually follow through with that? It's very easy to imagine a bright, young college grad heading for Wall Street planning to donate 75% of his income, but once he gets there he finds he quite likes the taste of caviar and all his friends and coworkers have a couple BMWs, anyway...