:Several lines of reasoning have been employed to both approve and disapprove two of Nicholas Agar’s positions: his argument that the creation of postpersons is imaginable and possible and his inductive argument disfavoring the creation of postpersons. This article discusses a number of these lines of reasoning, arguing that1)The creation of postpersons is imaginable if they are envisaged as morally enhanced beings.2)The creation of postpersons is justified, subject to the condition that we create morally enhanced postpersons.The reason given for the (...) first point is that it is possible to imagine postpersons who are morally enhanced, provided that we consider moral enhancement as an augmented inclination to act in line with how we believe we ought to act. There are two reasons offered for the second point: the first indicates probability, and the second offers proof. That is, if we assume that the higher moral status of postpersons implies their enhanced morality, we can conclude, inductively, that postpersons will not be inclined to annihilate mere persons. For if mere persons have moral inhibitions against obliterating some species of a lower moral status than their own, morally enhanced postpersons will be even less likely to do the same to mere persons. In fact, they might consider it their moral duty to preserve those beings who enabled them to come into existence. Moreover, even if morally enhanced postpersons decide to annihilate mere persons, we can conclude, deductively, that such a decision is by necessity a morally superior stance to the wish of mere persons to continue to exist. (shrink)

The aim of this essay is to question the coherence of debates on moral enhancement by neurophysical or pharmaceutical means in the absence of a cogent conception of the object of moral scrutiny: namely, moral enhancement. I present two conceptions of moral enhancement—weak and strong—and argue that given the problem of acquiring a standard measure of moral enhancement, regardless of whether enhancement is present in its weak or strong form and regardless of whether one endorses moral realism or different forms (...) of antirealism, presenting a cogent conception of moral enhancement is fraught with difficulty. This fact has serious implications for continuing debates on the morality of moral enhancement, insofar as it limits the extent to which we have, or it is possible to have, an agreed conception of moral enhancement that could (in principle) be empirically verified and count as an object for moral scrutiny. (shrink)