 Wong (1996) defended a partly similar position, though one intended to allow for greater diversity in correct moral codes. He argued that more than one morality may be true, but there are limits on which moralities are true. The first point is a form of metaethical relativism: It says one morality may be true for one society and a conflicting morality may be true for another society. Hence, there is no one objectively correct morality for all societies. The second point, however, is a concession to moral objectivism. It acknowledges that objective factors concerning human nature and the human situation should determine whether or not, or to what extent, a given morality could be one of the true ones. The mere fact that a morality is accepted by a society does not guarantee that it has normative authority in that society. For example, given our biological and psychological make-up, not just anything could count as a good way of life. Again, given that most persons are somewhat self-interested and that society requires some measure of cooperation, any plausible morality will include a value of reciprocity (good in return for good on some proportional basis). Since these objective limitations are quite broad, they are insufficient in themselves to establish a specific and detailed morality: Many particular moralities are consistent with them, and the choice among these moralities must be determined by the cultures of different societies.