Published online by Cambridge University Press: 01 January 2022
This article addresses the question of whether we should conceive of mechanisms as productive of change in a regular way. I argue that, if mechanisms are characterized as fully regular, on the one hand, then not enough processes will count as mechanisms for them to be interesting or useful. If no appeal to regularity is made at all in their characterization, on the other hand, then mechanisms can no longer be useful for grounding prediction and supporting intervention strategies. I conclude that, if the New Mechanistic Philosophy is to be successful, a stochastic characterization of mechanisms must be adopted.
I thank Lindley Darden, Tudor Baetu, Robert Richardson, Bill Bechtel, Roberta Millstein, Peggy DesAutels, and Nancy Cartwright for their helpful comments, both in personal correspondence and at the PSA meeting in Montreal.