 The third and final difficulty stems from utilitarianism’s thoroughgoing consequentialism. Rules are assessed strictly in the light of the consequences of adopting then, not in terms of their intrinsic properties. Of course, when agents follow rules, they are meant to do what the rule requires rather than to calculate consequences directly. But for a utilitarian, it is never going to be a good reason for adopting a rule that it will give people what they deserve or what they are entitled to, when desert or entitlement are created by events in the past, such as a person’s having performed a worthwhile action or entered an agreement. Backward-looking reasons have to be transmuted into forward-looking reasons in order to count. If a rule such as pacta sunt servanda (‘agreements must be kept’) is going to be adopted on utilitarian grounds, this is not because there is any inherent wrongness in defaulting on a compact one has made, but because a rule that compacts must be kept is a useful one, since it allows people to co-ordinate their behaviour knowing that their expectations about the future are likely to be met. But justice, although not always backward-looking in the sense explained, often is. What is due to a person is in many cases what they deserve for what they have done, or what they are entitled to by virtue of past transactions. So even if it were possible to construct a forward-looking rationale for having rules that closely tracked desert or entitlement as these are normally understood, the utilitarian still cannot capture the sense of justice – why it matters that people should get what is due to then – that informs our common-sense judgements.