How are moral decisions made in such contexts? For example, if x believes old people are more important and y believes young people are, how would they make a decision where they would have to choose one life over another? This is just one example, but in general, is it best to choose randomly in such circumstances? I mean, it's impossible for one to say to the other you are wrong; because it is not objective or logically deduced which life matters more. How then?