 The forgetting that makes it reasonable to violate Reflection in Talbott’s spaghetti dinner example involves one type of limited future impairment. Christensen gives a different case in which an agent has just consumed a mind-altering drug (LSQ) that he expects in hour’s time will make him believe that he can fly, without conferring upon him any such power (Christensen 1991). However, this is the only effect of the drug, so that the agent’s faculties will remain otherwise acute. Before the drug takes effect, the agent should not take his probability that he can fly conditional on his coming to believe it in an hour to be high, as required by Reflection, because what he will think when under the influence is irrelevant to his ability to fly. A similar example involving Ulysses and the Sirens is discussed by van Fraassen (1995).