Conventionalism about promising is the view that the power to make binding promises depends essentially on the existence of a social practice or convention of promising. This paper explores an objection to conventionalism that says that—(allegedly) contra conventionalism—there is no morally acceptable world in which we lack the power of promise. Instead, normative powers theorists claim that our power of promise is morally basic or necessary. I argue that the conventionalist need not deny this claim. There are several ways to (...) develop a noncontingent conventionalism: a version of the view that can accommodate the insight that the power of promise is indispensable to morally acceptable lives. Then, I argue that the conventionalist is indeed on the hook for accommodating this insight. I wrap up by considering the state of play in the debate over conventionalism about promising. Once we note the theoretical possibility of noncontingent conventionalism, it looks like the theatre of battle shifts to the difficult question of whether “natural” morality always provides “moral necessities.”. (shrink)

If I promise to pick you up at the airport, I thereby become obligated to do so. But this is not the only way I could undertake this obligation. If I offer to pick you up, and you accept my offer, I become obligated to pick you up in much the same way. I would also undertake similar obligations if you asked me to pick you up and I accepted your request, or if we made an agreement that I will (...) pick you up at the airport and in exchange you’ll buy me dinner. Why are the normative effects of accepted offers, accepted requests, and agreements so similar to those of promises? I argue that theorists of promising need to answer this question, and so they need to pay attention to offers, requests, and agreements. On the theory I defend, promises, offers, requests, and agreements have such similar normative effects because they all result in joint decisions between the relevant parties. I argue that this ‘joint decision view’ provides an attractive explanation of the similarities and differences between promises, offers, requests, and agreements. (shrink)