 While it is clear, then, that critical disability theory attends to devalued persons, controversy over who the subject of critical disability theory is lies at the heart of the approach. This controversy strongly signals the import of critical disability methodology for theoretical work more generally. Critical disability theory deals seriously with the heritage and construction of disability identity, but that identity is in flux and related to the very nature of human embodiment. Disability is unique as an “identity category” because “anyone can enter [it] at any time, and we will all join it if we live long enough” (Garland-Thomson 2002: 20). Indeed, the concern for vulnerability in the approach extends to non-human animals, as some critical disability theorists engage critical animal studies (Taylor 2017). This makes critical disability theory, insofar as it reveals crucial aspects of embodiment, an essential ingredient of any political and social analysis.