Chapter 3 reconsiders disability studies' founding concern with medicine through Heidegger's phenomenology. I suggest Heidegger's reframing of truth as disclosedness, or the Greek Aletheia , lets us reframe these concerns along his fundamental ontology. After outlining Heidegger's understanding of truth, I review the relevant literature, looking to the social model of disability, other phenomenological approaches, and similar, but more recent, interpretive perspectives. I suggest that medicalization not only refers to medical practices, but models that see disability only in terms of restricted function. I make sense of this using the case of rehabilitation science, and three measures employed therein. Two are numerical measures; the interview is the third. I end by discussing future work in rehabilitation.Both critical disability studies and the rehabilitation sciences share a common object of critique: the so-called medical model of disability. They differ, however, on what exactly that model is. Classical disability studies -most prominently the British social model (Barnes 2000 ; Oliver 1986 )-understand the medical model as one that frames all problems of Medicalization 46 T. ABRAMS