 Another set of concerns arises from purported facts about similarities among and interactions across different societies vis-à-vis morality. People in one society sometimes make moral judgments about people in another society on the basis of moral standards they take to be authoritative for both societies. In addition, conflicts between societies are sometimes resolved because one society changes its moral outlook and comes to share at least some of the moral values of the other society. More generally, sometimes people in one society think they learn from the moral values of another society: They come to believe that the moral values of another society are better in some respects than their own (previously accepted) values. The Mondrian image of a world divided into distinct societies, each with it own distinctive moral values, makes it difficult to account for these considerations. If this image is abandoned as unrealistic, and is replaced by one that acknowledges greater moral overlap and interaction among societies (recall the Pollock image), then the proponent of MMR needs to give a plausible account of these dynamics. This is related to the problem of authority raised earlier: These considerations suggest that people sometimes acknowledge moral authority that extends beyond their own society, and a relativist needs to show why this makes sense or why people are mistaken in this acknowledgement.