 Contemporary quantum physics has produced a more diversified theory landscape, and it is an open question whether we have moved beyond the point where Whitehead’s metaphysical transposition of the field concept is still pertinent, or could be adjusted to interpret also one of the currently competing  theories.[19]  However, very generally speaking, there are at least four basic aspects of our current views of the quantum-physical domain that seem to favor a process metaphysics, whether Whiteheadian or non-Whiteheadian. First, as the so-called ‘problem of identical particles’ indicates, in the microphysical domain individuation and countability fall asunder, which calls for an ontology of ‘subject-less’ processes that are the features by which we individuate quantum-physical entities, but occur in countable units only relative to interaction context. Second, if spacetime is quantized and emergent, metaphysics cannot operate with basic entities that are individuated in terms of their spacetime locations. Third, the “measurement problem” presents a particular difficulty for substance metaphysics, since the latter rests on the assumption that all individuals are fully determinate independently of their interaction context. In contrast, process metaphysics endorses the principle that ‘interaction is determination.’ Fourth, quantum entanglement (e.g., in EPR-Bohm systems) seems a clear-cut example of ontic emergence that substance metaphysics cannot accommodate; while some systems properties (e.g., weight) can be construed as resulting directly from the causal properties of the elements of a collection of persistent substrata, the correlations that measurements on entangled quantum entities display cannot be interpreted in this fashion since the properties of the components of the system do not exist independently of the measurement performed. The measured correlations thus are properties of an interaction and not of any substance. While working quantum physicists often are hesitant to attempt any conceptual explication of mathematical models of quantum physical processes, Carlo Rovelli is a notable exception. Rovelli’s relationist interpretation of loop quantum gravity is committed to an understanding of physical being as becoming in a radical sense, as a sort of change that does not presuppose a pre-existing spacetime  framework.[20]