 The significance of the first requirement is easy to see. If there is a general rational pressure favoring sticking to one’s plan so long as there is no problem with it, then a rational agent that takes plans seriously will not get into the sort of trouble Broome imagines Abraham might get into. When faced with incommensurable alternatives, the rational agent who takes plans seriously will adopt a plan and then stick to it even if his preferences are consistent with pursuing an alternative course of action.