It is both a more logical and a more physical statement to think of absolute zero as an unrealisable abstraction which cannot exist in the real universe, rather like a singularity or a mass moving at the speed of light. Newton's classical calculus can illustrate the way a system tends but the theory of limits does not mandate that zero and infinity must correspond to real physical states. Simple Galilean relativity shows that there can be no state of absolute motionlessness in physical reality. GR cannot quite accommodate this self-evident fact because it ignores the philosophy of the quantum, which explicitly states that a physically real entity cannot be infinitely divisible. It beggars belief that a simple truth known to the pre-Socratics should be so blatantly ignored by 21st century science but it certainly explains why spacetime physics makes no bloody sense.Nicomedes wrote: I know what you mean, it's like absolute zero, just because we can't detect any movement with our present observations and instruments, doesn't mean we ought to conclude there is no movement, it just means our current observations and instruments aren't fine enough, in all likelihood.
Though I can't be certain, there's probably always some movement and variability going on, that's the way nature seems to operate.
So did the Pythagoreans in a way but it was actually the great Persian philosopher/mathematicians who understood this best of all. The cloistered European houses of learning managed to import many of their mathematical tools from the Persians but they didn't bother to import the philosophy which was supposed to go with it. Presumably they felt they were in no need of philosophical instruction by a bunch of godless heathen when they had Aquinas to tell them what was what but unfortunately they made an error of judgement which was to send the science of physics into a conceptual cul-de-sac. Newton decided that Descartes was right and that his 3D space was physically real, despite Leibniz's furious protestations to the contrary. Physics will never make sense until the geeks wake up and realise that Leibniz was right and Newton was fucking WRONG.Nicomedes wrote: I believe spatial dimensions are completely arbitrary concepts,
In that case you're a heretic like me. Minkwoski's 4D manifold explicitly implies that no metaphysical distinction exists between past, present and future. It goes without saying that if you mention the word "metaphysics" in a roomful of physicists they'll all quickly move away from you as if you just farted.Nicomedes wrote:don't think time ought to be considered the 4th dimension.
Time is history, the idea that everything collectively and individually has a past, present and future,
I completely disagree with this. I reckon the universe is exactly what it appears to be, an infinite sequence of moments, which means that reality can only be said to exist in its own moment NOW. This presentist commitment reduces 3D space to an artefact of consciousness with which we examine our own past and this opinion is in complete accordance with the evidence. This is a cosmological model of such sublime austerity that it simply cannot be false.Nicomedes wrote:We simplify, simply because the world is infinitely more complicated than the brain can comprehend in its entirety,
Precisely. Events in the universe proceed in an orderly and causal fashion but the patterns of organisation we use to describe this order is entirely our own affair. This means that all the various waves. particles, forces, and fields which we invent and then collectively call the "laws of physics" are no such thing. These are merely the laws of physicists because nature itself is beholden only to the single meta=law of cause and effect.Nicomedes wrote:Yeah reality seems orderly, but this can only be grasped so much, and we should be careful not to conflate what's going on internally with what's going on externally, like Plato, and modern physicists seem to be doing, but that being said, there's always going to be some overlap between the two.
"All things originate from one another, and vanish into one another according to necessity and in conformity with the order of time"...Anaximander
"Life is what happens to you while you're making other plans"....John Lennon
"Shit happens"....Obvious Leo