Consider another picture of what it would be for a demand to be ‘objectively valid’. It is Kant's own picture. According to this, a demand will be inescapable in the required sense if it is one that a rational agent must accept if he is to be a rational agent. It is, to use one of Kant's favourite metaphors, self-addressed by any rational agent. Kant was wrong, in my view, in supposing that the fundamental demands of morality were objective in this sense, but that is not the immediate point, which is that the conception deploys an intelligible and adequate sense of objectivity. It seems to have little to do with those demands being part of the fabric of the world; or, at any rate, they will be no more or less so than the demands of logic – which was, of course, part of Kant's point.