Abstract

This paper begins with the idea that we can learn a good deal about promising by examining the conditions and norms that govern promise- breaking. Sometimes promises are broken as a deliberate plan, other times they are broken because they are simply incompatible with other, more signifi cant moral norms, or because it becomes clear that they are impossible to keep. There are cases where people make promises that are actually incompatible with each other. Politicians, for example, often give such incompatible promises, either intentionally, or by making too many commitments, some of which turn out to be incompatible. In making such promises, agents guarantee that at least one promise be broken. Is the agent who makes incompatible promises under any obli- gation? If ‘ought’ implies ‘can,’ and promises entail obligations, then it seems that one cannot, in fact, make promises one cannot keep. This paper explores the problem by drawing analogies between incompatible promises and other promises that cannot be kept. It suggests that we can deny ‘ought’ implies ‘can’ strictly speaking, but recognize that there is a practical limit on what the agent can be called on to do. On this view, even promises to do the impossible commit the agent. Similarly, politi- cians who promise too much are still obligated to do as promised