An Organizational Account of Biological Functions

Abstract

In this paper, we develop an organizational account that defines biological functions as causal relations subject to closure in living systems, interpreted as the most typical example of organizationally closed and differentiated self-maintaining systems. We argue that this account adequately grounds the teleological and normative dimensions of functions in the current organization of a system, insofar as it provides an explanation for the existence of the function bearer and, at the same time, identifies in a non-arbitrary way the norms that functions are supposed to obey. Accordingly, we suggest that the organizational account combines the etiological and dispositional perspectives in an integrated theoretical framework. 1. Introduction 2. Dispositional Approaches 3. Etiological Theories 4. Biological Self-maintenance 4.1. Closure, teleology, and normativity 4.2. Organizational differentiation 5. Functions 5.1. C1: Contributing to the maintenance of the organization 5.2. C2: Producing the functional trait 6. Implications and Objections 6.1. Functional versus useful 6.2. Dysfunctions, side effects, and accidental contributions 6.3. Proper functions and selected effects 6.4. Reproduction 6.5. Relation with other ‘unitarian’ approaches 7. Conclusions

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