The Prevision of a Prevision
证明了当条件期望被替换为反映个体观察Y后对X实际信念的替代定义时，有界X的EX = E(E(X|Y))仍然成立，并讨论了该结果对主观主义理论的重要性。
Abstract We prove that the result EX = E(E(X | Y)) is true, for bounded X, when the usual concept of conditional expectation or prevision is replaced by an alternative definition reflecting an individual's actual beliefs concerning X after observing Y. We discuss the importance of this result to subjectivist theory.