Do organisms have an ontological status? Charles T. Wolfe Unit for History and Philosophy of Science University of Sydney
[email protected] forthcoming in History and Philosophy of the Life Sciences 32:2-3 (2010) Abstract The category of „organism‟ has an ambiguous status: is it scientific or is it philosophical? Or, if one looks at it from within the relatively recent field or sub-field of philosophy of biology, is it a central, or at least legitimate category therein, or should it be dispensed with? In any case, it has long served as a kind of scientific “bolstering” for a philosophical train of argument which seeks to refute the “mechanistic” or “reductionist” trend, which has been perceived as dominant since the 17th century, whether in the case of Stahlian animism, Leibnizian monadology, the neo-vitalism of Hans Driesch, or, lastly, of the “phenomenology of organic life” in the 20th century, with authors such as Kurt Goldstein, Maurice Merleau-Ponty, and Georges Canguilhem. In this paper I try to reconstruct some of the main interpretive „stages‟ or „layers‟ of the concept of organism in order to critically evaluate it. How might „organism‟ be a useful concept if one rules out the excesses of „organismic‟ biology and metaphysics? Varieties of instrumentalism and what I call the „projective‟ concept of organism are appealing, but perhaps ultimately unsatisfying. 1. What is an organism? There have been a variety of answers to this question, not just in the sense of different definitions (an organism is a biological individual; it is a living being, or at least the difference between a living organism and a dead organism is somehow significant in a way that does not seem to make sense for other sorts of entities, like lamps and chairs; it is a self-organizing, metabolic system; etc.) but more tendentiously, in the 1 sense that philosophers, scientists, „natural philosophers‟ and others have both asserted and denied the existence of organisms.