But what's a photon? What's a "path"? These are all human constructions, and we're just smart apes. How spectacularly unlikely is it that this is what reality "really" does? Then factor in the fact that it breaks down at some scale, so how does reality "get across" those scales to build these paths and these photons? Simply because we have five senses and a meager brain, and have had great successes with them, should we take this is as reason to suspect that reality will give up its secrets to us with millennia of effort and contemplation? I sorely doubt it. I don't even think reality has the slightest concept of a number, let alone a location or a path or a photon that would require such quantification. It just follows some immutable and spectacularly incomprehensible rules of being, i.e., it is what it is. Human conceptualizations are actually an effort to replace reality with something else, something smaller and more comprehensible (ergo Occam's razor), and the introduction of numbers and mathematics helped that process a lot for some sublimely profound reason. That this works so well in some situations is what is so amazing, but I do not see that as very good evidence at all that we are "close" to comprehending the most fundamental rules of existence. Not close at all, I should think (as per the "Planck domain").