 For some philosophers, either version of this view is unsatisfactory, for two related reasons. First, it is too narrow, since it does not offer radically impaired human beings complete moral equality. Only a small subset of other humans need to treat them as moral equals; the rest merely need to respect this special relationship. Second, it is too contingent—a human with radical cognitive impairments owes even his partial equality to the existence of close relationships. If his parents and other relatives abandon him or die, he has only a very tenuous claim to being treated by the rest of humanity any better than a non-human animal with similar attributes.