 Other philosophers and disability scholars would deny that the inequalities associated with impairments can be regarded as “natural” (Amundson 1992; Wasserman 2001). In questioning the very notion of “natural inequalities”, they join a broader philosophical debate about whether it is possible to draw a coherent distinction between natural and artificial or social inequalities (see Lippert-Rasmussen 2004; Nagel 1997; Pogge 2004a,b; Aas and Wasserman,  2016).[7]  Even if such a distinction can be plausibly drawn, it may turn out that many or most inequalities in abilities are artificial: as with of obsolete skills, those inequalities may be largely attributable to the physical and social environment (Bickenbach 1993).