 There is little or no evidence that Kant himself thought about this problem, which is also connected with the moral status of many non-human animals who seem to matter morally but who lack the moral capacities and dispositions that, according to Kant, are necessary for basic moral status.  Kant’s defenders have nonetheless explored what his basic moral framework might imply about the moral status of those with severe cognitive disabilities. One approach is simply to bite the bullet by admitting that people with certain severe cognitive disabilities lack the basic moral status that others of us share (Wood 1998, Sussman 2001. (This general strategy is deployed by Regan and followed by Wood, McMahan, Warren, Merkel, and others. For the claim that such humans are not persons, on Kant’s theory, see also Sussman, Idea, 242.) Proponents of this view can emphasize that, although we do not have duties to such people, we can have duties regarding them, such as duties of moral self-improvement that give us reasons to treat those with significant cognitive disabilities humanely for the sake of improving how we treat other human beings with basic moral status (MM 6:442) or duties of beneficence that give us reasons to care for them as a kindness to their families (G 4:430). Pragmatic considerations might also give us reasons to err on the side of caution when it comes to assessing whether someone entirely lacks the moral capacities and dispositions that ground basic moral status. Because of difficulties making such determinations and the moral risks involved in judging incorrectly, we should perhaps assume, unless we have very strong evidence to the contrary, that each human being has basic moral status (Korsgaard 1996).