I think there are two methods that people use. You could deduce ethical rules from some truths or you could believe it is most probable given the evidence. I think that intuitions are the only form of evidence possible. Something seeming true is a prima facie justification for that ethical truth. We accept intuition in the form of perception, memory knowledge, mathematical knowledge, etc. I don’t find it as much of a leap to accept it in the case of moral truths. Torturing an infant seems wrong and that is evidence it is wrong. I think I remember my name on here is Parrhesia and so that is at least some reason to think my name on here is Parrhesia.
I think there are two methods that people use. You could deduce ethical rules from some truths or you could believe it is most probable given the evidence. I think that intuitions are the only form of evidence possible. Something seeming true is a prima facie justification for that ethical truth. We accept intuition in the form of perception, memory knowledge, mathematical knowledge, etc. I don’t find it as much of a leap to accept it in the case of moral truths. Torturing an infant seems wrong and that is evidence it is wrong. I think I remember my name on here is Parrhesia and so that is at least some reason to think my name on here is Parrhesia.