 Whitehead said to his students: “A definite creative act is looked on as handing over to physics the ultimate unit” (2021: 41), where the ultimate unit is Planck’s constant, or, in other words, the quantum of action. Clearly, Whitehead thought of the quantum of action as an abstract aspect of his ultimate metaphysical building blocks, his elementary creative acts or ‘actual occasions,’ and his AQT, like the Maxwell-Lorentz theory of electrodynamics and Whitehead’s ATG, were still at the back of his mind when he developed his metaphysics at Harvard. This may well be the reason why his metaphysics—his process philosophy—has been conceived by many authors as an interesting framework to ontologically interpret the mathematical formalism of quantum mechanics. And even authors who are not directly inspired by Whitehead, often come up with interpretations of quantum mechanics that are strikingly Whiteheadian. A good and recent example is Carlo Rovelli’s relational interpretation. Rovelli writes: