I argue that 'c' occurs extensionally in 'c caused e' and 'D' occurs extensionally in 'c caused e because c is D'. I claim that this has been insufficiently appreciated because the two contexts are often run together and because it has not been clear that the description D of c is among the referents of an explanatory argument. I argue as well that Hume's analysis of causation is consistent with taking causation to be a relation between single events, and (...) that even if events are eliminated as virtual entities, extensionality holds for all terms in the resulting context. (shrink)

For the events "e" and "f" to be identical, They must have the same subject and spatio-Temporal location, And their (participial) property-Descriptions must belong to the same "modification set" (e.G., Reddening, Reddening slowly, Reddening in july). The same criterion applies to actions, Which are here treated strictly as a proper subclass of events (john's closing the door = the door's being closed by john = the door's becoming closed). Actions related by goldman's "causal generation" are therefore distinct, But those related (...) by his other three types of act-Generation are not. This conclusion requires abandonment of the view--Questionable on other grounds--That causal contexts are thoroughly extensional. (shrink)