 The former way of grounding moral status gives it a wider “writ,” because the individual’s moral status is not based on his relationship to specific others. Rather, it is based on the norm of a group to which she belongs. That norm demands recognition by anyone, whether a member of the group or not, capable of recognizing it. If human beings with radical cognitive impairments have full moral status by virtue of belonging to a group with the norm of rationality, a rational Martian, no less than a rational human, should recognize the full moral status of humans with those impairments. It might be possible to argue that the morally-relevant norms of a group are not binding on those outside the group, but we have not seen such an argument.