  Green points to Kant’s Categorical Imperative, according to which the prohibition is against treating a person merely as means, and not at the same time as an end. As Green emphasises, there is no prohibition against treating a person as a means (as an instrument) (Green 2000, 44). In fact, Green holds, “we must treat others as instruments, for we need their skills, their company, and their bodies—in fact, there is little that we social creatures can do on our own, and so little that is fulfilling” (Green 2000, 45–6). According to Green, when people are old, severely disabled, or chronically unemployed what they fear the most is that they no longer are of use to others. As Green puts it, “they miss not only their diminished agency, but also their diminished objectivity. … They become … subjectified” (Green 2000, 46).