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Published online by Cambridge University Press: 28 February 2022
Nancy Cartwright’s new book Nature’s Capacities and their Measurement (1989)2 attempts to achieve something remarkable: refute Hume’s most crucial theses concerning causation and let in capacities largely through methodological arguments. The two central theses of Hume which Cartwright challenges are:
(1) Generic causal facts (e.g., causal laws) are reducible to regularities.
(2) Singular causal facts are true in virtue of generic causal facts.
Cartwright’s arguments against (1) and (2) are methodological in the sense that she arrives at her conclusions by considering our best methods for studying the relationship between probability and causation. Cartwright rejects (1) on the grounds that if we look at the way in which probabilities are related to causal relations as expressed in her principle CC, or if we carefully study the methodology of causal modelling employed in the social, behavioral, and life sciences, we see that to get certain causal information from probabilities we must presuppose the truth of other generic causal facts.
The author gratefully acknowledges the support of the Bogazici University Research Fund.