 Some of our beliefs and desires are about specific individuals. I might, for instance, believe that BW is a crook and desire that he be punished. Some of our beliefs and desires are self-directed. I might, for instance, believe that I am not a crook and desire that I not be punished. If I know that I am BW, then I should not have all of those beliefs and desires. But I might be ignorant of this. In some circumstances (e.g., amnesia, or receiving deceptive information about your identity) it is no sign of irrationality to not know who you are. And if you don’t know you are X, you may ascribe different properties to yourself and to X.