The fundamentals of the science of physics that the 21st century has inherited from the 20th consist of two grand theories. On the one hand, there is the general theory of relativity [GR] set forward by Albert Einstein, confirmed by a wide range of experimental tests since. This holds (to put things very simply) that space-time is a continuous fabric that is distorted with all the matter and energy within it, while by the same token this background determines the flows of all that matter and energy. It is at its heart a theory about gravity and it is about certainties. On the other hand, there is a body of quantum mechanics [QM], advocated by Niels Bohr and opposed in its earliest formulations by the aforementioned Albert Einstein. Quantum mechanics is all about indeterminacy and uncertainty. We can be sure about the location of a particle only if we are willing to accept some vagueness about its velocity. Or, we can fix its velocity only if we are willing to leave some vag...