 There are different views about the conceptual relationship between the informal and more clinical language, and philosophers and others have approached this problem in several ways depending on varying foundational assumptions. Some insist that the confusions and inconsistencies that occur result from the fact that the concept of mental disorder employed in psychiatry’s conception and classification of disorders is too closely allied to the parallel concepts in folk psychology. Confusion and inconsistency at the boundaries between mental, neurological, and organic disorders arise, according to Dominic Murphy, from acceptance of inconsistent folk psychological categorizing, ill-suited to the properly scientific taxonomic task which, because it is tied to the hope for a theory of the “hidden structure” of the taxonomic domain, seeks causal explanation. Relinquishing intuitively grounded, inherently normative folk psychological categories, and accepting the divisions that ensue from scientific research through a combination of psychiatry and cognitive neuroscience, is the first step towards achieving a scientific psychiatric classification (Murphy 2007). Without a principled and systematic way to identify the class of mental disorders, Murphy’s concerns suggest, any disorder taxonomy that is presently employed will likely prove inaccurate. The old adage that once their organic causes are known, all mental disorders are transformed into neurological conditions, bespeaks an expectation that the out-moded, folk psychological category of mental disorder is itself temporary and will eventually be rendered otiose—an outcome anticipated without regret by adherents of strong mind-body reductionism (see Guze 1992; Churchland 1989).