Does Singer explore how the limits of one’s knowledge about the impacts of their actions might play into the decisions?
Like, I could send $5 to some overseas charity, but I don’t have a good way to know how that money is being used. Conversely, I could use it locally myself to reduce suffering in a way I can verify.
It seems to me that morally I should prioritize actions I know will reduce suffering over actions that may reduce suffering but that I cannot verify. Verification is important because immoral actors exist, so I can’t just assume that moral actions that I delegate to other actors will be carried out. Since it’s easier to have good knowledge about local actions (in particular those I execute personally), this would tend to favor local actions.