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Since the time of Hippocrates, madness has typically been viewed through the lens of disease, dysfunction, and defect. Madness, like all other disease, happens when something in the mind, or in the brain, does not operate the way that it should or as nature intended. In this paradigm, the role of the healer is simply to find the dysfunction and fix it. This remains the dominant perspective in global psychiatry today. In Madness: A Philosophical Exploration, philosopher of science Justin Garson presents a radically different paradigm for conceiving of madness and the forms that it takes. In this paradigm, which he calls madness-as-strategy, madness is neither a disease nor a defect, but a designed feature, like the heart or lungs. That is to say, at least sometimes, when someone is mad, everything inside of them is working exactly as it should and as nature intended. Through rigorous engagement with texts spanning the classical era to Darwinian medicine, Garson shows that madness-as-strategy is not a new conception. Thus, more than a history of science or a conceptual genealogy, Madness is a recovery mission. In recovering madness-as-strategy, it leads us beyond today's dominant medical paradigm toward a very different form of thinking and practice. This book is essential reading for philosophers of medicine and psychiatry, particularly for those who seek to understand the nature of health, disease, and mental disorder. It will also be a valuable resource for historians and sociologists of medicine for its innovative approach to the history of madness. Most importantly, it will be useful for mental health service users, survivors, and activists, who seek an alternative and liberating vision of what it means to be mad.

The biological functions debate is a perennial topic in the philosophy of science. In the first full-length account of the nature and importance of biological functions for many years, Justin Garson presents an innovative new theory, the'generalized selected effects theory of function', which seamlessly integrates evolutionary and developmental perspectives on biological functions. He develops the implications of the theory for contemporary debates in the philosophy of mind, the philosophy of medicine and psychiatry, the philosophy of biology, and biology itself, addressing issues ranging from the nature of mental representation to our understanding of the function of the human genome. Clear, jargon-free, and engagingly written, with accessible examples and explanatory diagrams to illustrate the discussion, his book will be highly valuable for readers across philosophical and scientific disciplines.

This book is a critical survey of and guidebook to the literature on biological functions. It ties in with current debates and developments, and at the same time, it looks back on the state of discourse in naturalized teleology prior to the 1970s. It also presents three significant new proposals. First, it describes the generalized selected effects theory, which is one version of the selected effects theory, maintaining that the function of a trait consists in the activity that led to its differential persistence or reproduction in a population, and not merely its differential reproduction. Secondly, it advances “within-discipline pluralism” (as opposed to between-discipline pluralism) a new form of function pluralism, which emphasizes the coexistence of function concepts within diverse biological sub-disciplines. Lastly, it provides a critical assessment of recent alternatives to the selected effects theory of function, namely, the weak etiological theory and the systems-theoretic theory. The book argues that, to the extent that functions purport to offer causal explanations for the existence of a trait, there are no viable alternatives to the selected effects view.The debate about biological functions is still as relevant and important to biology and philosophy as it ever was. Recent controversies surrounding the ENCODE Project Consortium in genetics, the nature of psychiatric classification, and the value of ecological restoration, all point to the continuing relevance to biology of philosophical discussion about the nature of functions. In philosophy, ongoing debates about the nature of biological information, intentionality, health and disease, mechanism, and even biological trait classification, are closely related to debates about biological functions.