-Physics is the study of what is fundamental in the natural world.
-All fundamental accounts of the physical world reduce it to something pushed around and something pushing: Newton’s body and vis impressa, the 19th Century energy and mass, our fermions and bosons, etc. For Aristotle, the actuality and passivity themselves were fundamental.
-Physics is an account of motion, change or coming to be, whether as something moved or doing the moving.
-Change is divided into uniform units of space and time. These units are further combined and related ad infinitum to make complex quantities like mass, energy, momentum. The word “is” in bold is taken in the sense of equivalent exchange, as in “a dollar is 1.12 euros” or “A cruise is 750 credits.”
-In this sense of physics, the natural world is an economy of exchange values. This economy is ruled by invariant rules of exchange called laws of nature. These rules are sometimes absolute, sometimes probabilistic, though qua exchange this makes no difference.
-Change formally is not the exchange rate of its units but a coming to be from a terminus a quo to a terminus ad quem. Coming to be is literally what it says: being that was not and now is.
-Parmenides found a contradiction in change taken formally: given that the terminus ad quem was being the terminus a quo would be non-being, but it is impossible to start with nothing and get something, and so motion was as subjective as sunrises.
-Parmenides missed that being, like many nouns, has both a potential and actual meaning. Just as both the cooked and uncooked object are pizza, both the bulb and the bloom are a tulip, and both the beans and the drink are coffee, being is also both the potential and the actual, and so taken being comes to be from being, though only if we understand a mobile subject as potential being existing derivatively and relatively to its terminus ad quem.
-Notice that the motion is teleological as soon as its described formally. Even calling it coming to be is teleological. Only potentials are in motion, and potential arises only after the terminus ad quem exists in the manner appropriate to a terminus ad quem.
-So physics is both the account of how nature is the invariant rules of exchange for uniform units of divided space time and it is formally the study of teleological action arising from the intrinsic orientation of some potency to a terminus ad quem existing in the manner appropriate to such a reality.
-Through a series of historical accidents the laws of nature physics is so well known that it is now simply identified with science, while physics taken formally is a boutique interest studied by almost no one. This is largely harmless and fine. Popular things attract sophists and conmen, and nowadays those who study formal physics can study it serenely and free from such dialectical pests. On the other hand, the vast interest in laws of nature physics allows for considerable advances and subtle insights, even if at the cost of attracting all the bad attention that formal physics doesn’t attract.