  The generalist who takes this line supposes, qua generalist, that a feature that makes a difference in one case will make the same sort of difference in every case, and that there will be a contributory principle specifying its regular contribution. This is what particularism is concerned to rebut. Particularists applaud Ross’s insistence that there can be many features of the situation each of which makes some difference to how one should act; they merely want to say that the matter is not regular in the way that Ross, as a generalist, supposes. They have three points to make, then. The first involves producing counter-examples to suggested regular contributors. Ross supposes, for instance, in accordance with long tradition, that the fact that one has promised to do something is always some reason to do it. A counter-example to this claim would be a case where, for peculiar reasons no doubt, the fact that one has promised to do something is either no reason to do it or even a reason not to do it.  Suppose, for instance, that I have promised not to keep my next three promises; what then? Again, does one always have at least some reason to tell the truth? A little bit of ingenuity enables one to come up with a case in which the fact that this is true is a reason not to say it. And so on.