Cost-benefit analysis is routinely used by government agencies in order to evaluate projects, but it remains controversial among academics. The standard defense appeals to the Pareto standard or the Kaldor-Hicks standard, and assumes that agencies should respect people's actual preferences, as...

Preference-aggregation problems arise in various contexts. One such context, little explored by social choice theorists, is metaethical. “Ideal-advisor” accounts, which have played a major role in metaethics, propose that moral facts are constituted by the idealized preferences of a...