 (Christensen 2010b) which says that one’s credence in q given that the maximally rational subject in one’s situation has credence x in q, should be x. The maximally rational subject obeys the probability axioms and possibly has further rationality properties that one might not possess oneself, though she is assumed to be in your situation, having no more evidence than you do. If one obeys the probability axioms oneself, then this principle becomes: