 Horwich (1987: Chap. 11) rejects Eells’s argument because, even if an agent knows that her choice springs from her beliefs and desires, she may be unaware of the mechanism by which her beliefs and desires produce her choice. The agent may doubt that she chooses by maximizing expected utility. Then in Newcomb’s problem her choice may offer relevant evidence about the prediction. Eells (1984a) constructs a dynamic version of the tickle defense to meet this objection. Sobel (1994: Chap. 2) discusses that version of the defense. He argues that it does not yield evidential decision theory’s agreement with causal decision theory in all decision problems in which an act furnishes evidence concerning the state of the world. Moreover, it does not establish that an evidential theory of rational desire agrees with a causal theory of rational desire. He concludes that even in cases where evidential decision theory yields the right recommendation, it does not yield it for the right reasons.