 In general, Ross’s value theory is too rigid. One of the attractive features of his theory of prima facie duties is its flexibility and its lack of a rigid hierarchy amongst the duties. It is always possible for any one duty to outweigh any other. Ross would do well to inject some of this flexibility into his value theory, thinking it is always possible for one value to outweigh any other in some context. This seems a better fit with what ‘we’ think on reflection.