 More generally, it must be said that Sidgwick, under the influence of Hegel and other historically-minded philosophers, did not claim that he was impartially addressing all historically important methods of ethics, but only those that in his estimate had become the live options as humanity had progressed (Schultz 2013, 2014). He may have been somewhat misguided in identifying those, but that is not the same as being blind to the content of the alternatives.