  Now, the Davidson-Anscombe thesis plainly is concerned with the relation between the agent's act of turning on the light, his act of flipping the switch, etc. But which configuration of events, either prior to or contained within the extended causal process of turning on the light, really constitutes the agent's action? Some philosophers have favored the overt arm movement the agent performs, some favor the extended causal process he initiates, and some prefer the relevant event of trying that precedes and ‘generates’ the rest. It has proved difficult to argue for one choice over another without simply begging the question against competing positions. As noted before, Hornsby and other authors have pointed to the intuitive truth of