 The approach asking what the maximally rational subject would do gives a motivation for the idea that second-order evidence has authority with respect to first-order beliefs, and like the SR approach puts the second order in the driver’s seat by having a statement of probability in the condition of the conditional probability. This may appear to give unconditional authority to second-order evidence, but second-order evidence won’t change the subject’s first-order verdict if she believes the latter is already what the maximally rational subject would think. The approach represents self-doubt as a coherent state that one can also coherently revise via conditionalization. It identifies a state of matching between the orders—matching one’s confidence to one’s best guess of the maximally rational subject’s confidence. This gives a general rule, and demands that same matching for all cases, though gives no explicit guidance about how to determine which is the maximally rational subject or degree of belief.