 Another way of representing self-doubt using conditional probability follows the intuitive thought that I should tailor my first-order degree of belief to the confidence I think the maximally rational subject would have if she were in my situation (Christensen 2010b: 121). This would be a sensible explanation of the authority of higher order beliefs, of why taking them into account would be justified. It gives half of an answer to the question when the first-order should and shouldn’t defer to the second order by identifying a class of second-order statements to which the first order must always defer. However it pushes back the question of which individual statements those are to the question of which probability function is the maximally rational.