Promises and Reliance

In a Recent paper to The Joint Session of the AristotelianSociety and Mind Association Professor Neil MacCormick makes some interesting observations about the nature of promises and the source of the obligation to keep them. He rejects the view that an act can count as a promise only because a certain practice exists in a society. One may on the contrary well understand what promises are and know how to make them without there being any special convention making possible the speech act of promising which amounts to no more than …“an utterance of the speaker's about his own future conduct which is essentially characterized by the speaker's intending his addressee to take it as being intended to induce the addressee to rely upon the speaker's taking the action in question.” One needs no special rule to explain why promise-breaking is wrong for …“the fact of the addressee's reliance on the promisor is sufficient ground for asserting that the promisor has an obligation to keep his word.” To bring home the point, MacCormick contrasts promising with divorcing by the simple utterance of 'I divorce thee, I divorce thee.' This is intelligible as an act of divorcing only by presupposing a convention that allows a divorce to be effected in this way. In performing the act by the appropriate formula the person is invoking the conventional rules that must obtain in the society if the act is to be successful. Searle, we are told, fails to see that promises are quite different in that they …“are explicable in terms of an intention to bring about a specific perlocutionary effect, and an intention that that intention be recognized” It is neither here nor there to point out, as Searle does, that ‘I predict’ and ‘I intend’ like ‘I promise’ tend to create expectations for the effect a promise is intended to achieve is reliance and not simply an expectation.