In a related work, Dreams of Friendliness, Eliezer Yudkowsky gives an informal argument stating that all oracles will be agent-like, that is, driven by its own goals. He rests on the idea that anything considered "intelligent" must choose the correct course of action among all actions
avaliable. That means that the Oracle will have many possible things to believe, although very few of them are correct. Therefore believing the correct thing means some method was used to select the correct belief from the many incorrect beliefs. By definition, this is an optimization process which has a goal of selecting correct beliefs.