  If this is our picture of the individual trying to decide what she ought to do, how are we likely to conceive of the way to resolve disagreements between two individuals? Of course there are the facts of the matter to be sorted out between them. Then presumably they have to try to agree at least on which principles are to be taken as relevant (that is, to agree on the principles, and to agree that they are the relevant ones in the present case). Finally, they have to agree on the course of action that those principles recommend in the situation that faces them. This would be, as we might put it, a full resolution of any initial disagreement. Otherwise we are looking for a compromise of one form or another. It is possible, for instance, for a disagreement on the principles not to make any practical difference as things turn out, so that it can be left to be sorted out another day.