“Endorsing a particular view involves carefully weighing up different strengths and weaknesses; there’s no obviously correct position. (This becomes a theme when you start working on normative uncertainty. To an extent, this should be expected: we’re dealing with messy nonideal agents, who don’t have perfect access to their own values or to the normative truth).”

— William MacAskill, Will MacAskill on normative uncertainty (Machine Intelligence Research Institute blog)