 Such a metaphysical claim requires an account of what computation, or software, or physical information, is. If computations are not configurations of physical entities, the most obvious alternative is that computations are abstract, mathematical entities, like numbers and sets. As Wheeler (1982, 570) puts it, “the building element [of the universe] is the elementary ‘yes, no’ quantum phenomenon. It is an abstract entity. It is not localized in space and time”. Under this account of computation, the ontological claim of ontic pancomputationalism is a version of Pythagoreanism. All is computation in the same sense in which more traditional versions of Pythagoreanism maintain that all is number or that all is sets (Quine 1976).