| Summary: | Theories of function are conventionally divided up into historical and ahistorical ones. Proponents of ahistorical theories often cite the ahistoricity of their accounts as a major virtue. Here, I argue that none of the mainstream “ahistorical” accounts are actually ahistorical. All of them refer, implicitly or explicitly, to history. In Boorse’s goal-contribution account, history is latent in the idea of statistical typicality. In the propensity theory, history is implicit in the idea of a species’ natural habitat. In the causal role theory, history is required for making sense of dysfunction. I elaborate some consequences for the functions debate. © 2019 by the Philosophy of Science Association. All rights reserved.
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