 Although there is a thriving body of work that tries to analyse the concept of disease – as we’ll see in a moment – other theorists dispute the prospects for a successful analysis of the concept of disease. Schwartz (2007) contends that the biomedical sciences do not share a general concept of disease that is coherent enough to be analyzed. He recommends seeing the proposed analyses as introducing new concepts of disease that are related to existing usage but not bound by it. Concepts so introduced may work in some contexts but not others, and different concepts of disease could be needed for different medical purposes. Hesslow (1993) argues that diseases are not interesting theoretical entities in medicine and are irrelevant to most clinical decisions. These focus on how to improve a patient’s condition and do not need to depend on a judgment of disease.