Causal Power

This chapter investigates the ontology of causal power and causal influence that was suggested by the discussion of reductive explanation in the previous two chapters. In particular, it is suggested that we should understand causal powers to be dispositions to manifest causal influence. Such powers, it is shown, can be given a conditional analysis that is less susceptible to counterexamples than conditional analyses of dispositions more generally. It is further argued that the conditional analysis can be extended to cover multi-track powers by using functions, rather than conditionals, to describe powers. Functional descriptions of powers connect nicely to the descriptions of force fields that one finds in physics, suggesting that we can interpret forces as influences in the sense described here.