Vladimir_Nesov comments on Pluralistic Moral Reductionism - Less Wrong
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Sure. So what is it that makes (a) [the fact that you can save a life by donating $500 to VillageReach] normatively justifying, whereas (b) [the fact that you can save a mosquito by donating $2000 to SaveTheMosquitos] is not normatively justifying?
On my naturalist view, the fact that makes (a) but not (b) normatively justifying would be some fact about how the goal we're discussing at the moment is saving human lives, not saving mosquito lives. That's a natural fact. So are the facts about how the English language works and how two English speakers are using their terms.
What if you actually should be discussing saving of mosquito lives, but don't, because humans are dumb?
I think this is a change of subject, but... what do you mean by 'actually should'?
No idea.
I take you to mean "what would maximize Luke's utility function" (knowing that 'utility function' is probably just a metaphor when talking about humans) when you say "you actually should..." Of course, my 'utility function' is unknown to both of us.
In that case, it would remain true in our hypothetical scenario that I should-HumanLivesAreGood donate to VillageReach (assuming they're a good charity for saving human lives), while I should-UtilityFunctionLuke donate to SaveTheMosquitos.
(Sorry about formatting; LW comments don't know how to use underscores, apparently.)