Rationalists and utilitarians are typically inclined to Bayesian inferences in respect of their understanding of the world. This is more than just a convenient way of producing starting points for their deductions, it points to a common understanding of being as instance, as potentially repeatable instance. In order for a Bayesian prior to be a probability the form of belief that it embodies must be a sort of virtual frequentism, frequentist thought-experiments. (Many-worlds paradigms, and 'simulation' theories all point to this as well.) Metaphysically this makes no sense at all, since that which matter, that which speaks for the ground of being, can never be subject to these forms of speculation. This is similar to the reason why all Hegelians ultimately fail: the form of logic used gives out well short of where it purports to apply.