ata comments on Politics as Charity - Less Wrong
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But my vote doesn't even acausally affect others' votes: no one's thinking "I'll only vote if Will Newsome does", their algorithm is "I'll only vote if lots of other people do", and lots of other people will vote whether I do or not. Sure, if everyone had my decision theory it'd be a tragedy of the commons, but realistically the chance is still one in a million, or maybe very slightly better. Thus the notion of "deciding vote" is only a very little bit confused. Am I wrong?
I agree... tentatively. I haven't yet spent much time considering the idea of acausal influence in its most general form, but I'm not sure I see how it would apply here; you can have some pre-election influence by virtue of what sort of person you are (or seem to be), but when it's election day, it seems like you should be able to decide to vote or not vote without your decision retroactively implying too much about what other things you could have caused.
I realize that sounds exactly like the argument for two-boxing, but I'm not convinced the causal structure is similar enough for the analogy to be valid.
(I've previously had vaguely relevant thoughts about the expected payoff of one vote. I should expand on that at some point...)