 Moral norms perform precisely this function. A moral norm determines when the well-being of agent J should take precedence over the well-being of agent K. Indeed, we say that agent J has a right against agent K precisely when we think that the decisions or choices of agent J should prevail over the decisions or choices of agent K. The moral concerns of each agent thus reflect the agent’s views about the structure of the social choice function, not (necessarily) her views about what constitutes her own well-being. 