I'm having a hard time coming up with a motivation system that could lead such an AI to developing an acausal decision theory without relying on some goal-like structure that would end up being externally indistinguishable from terms in a utility function. If we stuck a robot with mechanical engineering tools in a room full of scrap parts and gave it an urge to commit novel actions but no utilitarian guidelines for what actions are desirable, I don't think I'd expect it to produce a working nuclear reactor in a reasonable amount of time simply for having nothing better to do.