 Second, a metaethical moral relativist position might be defended by emphasizing aspects of morality other than disagreement. For example, Rovane (2011 and 2013) has maintained that relativism is best understood, not as a response to disagreement, but as a response to alternative conceptual schemes that portray different worlds that are normatively insulated from one another. On this account, the truth-bearers in one world are not logically related to the truth-bearers in another world (so there cannot be strict disagreement), and yet it is not possible to embrace both worlds (so they are alternatives). Rovane argues that in the moral domain, but not in the domain of the natural sciences, there may be different worlds in this sense. Hence, a moral judgment may be true for the occupant of one world, but not for the occupant of another. An implication of this view, she says, is that learning and teaching across different moral worlds might not be possible.