Comment on I definitely never unsubscribed from a YouTube channel just for that...
Tlaloc_Temporal@lemmy.ca 2 months agoOh, absolutely! There are lots of physicists working right now to figure out the ins and outs of advanced quantum mechanics. There’s been a century long fight between the ones who think our current rules must be incomplete and the ones who don’t care why the rules are what they are so long as they work. There’s a surprising amount of dogma here too, with schools of thought being supported by proponents instead of science. I think that’s changing now, but I feel like that’s partly why physics hasn’t really expanded quantim physics at all.
So perhaps we will find a solid causal link between everything. Perhaps we’ll nail down entropy as a real property instead of just a statistical observation. Maybe we’ll truly understand the origins of not just this part of the universe, but the wider multiverses through time, space, and fields.
But maybe we’ll find that causality isn’t so solid, with time-like paths everywhere, and determinism only at medium scales. Perhaps the nature of existence is beyond gleaming for those held within.
Right now, we have no idea one way or the other. I definitely agree with continuing to ask why, but even the existence of the answers is up for debate, let alone the nature of those answers. I’m especially cautious of putting convenient explanations in the place of those unkowns.
So maybe saying so authoritatively that some causes don’t exists was an error on my part. Sorry about that. It would be more accurate to say that some causes might not exist, especially in some models, and that we can’t tell the difference yet.
gandalf_der_12te@lemmy.blahaj.zone 2 months ago
Thanks for elaborating. I think you have some interesting thoughts in that.
I like this one. I have been thinking about how we have introduced imaginary things like magnetic field as something real in the past, in order to find a missing link to explain interactions.
Especially this one hits.
I have been thinking about these “chains of causes” for a bit now, and I’ve come to jokingly call them “threads of fate” or more provokingly “world lines”. I like the idea that much of the world is in chaos, but sometimes, strong causal links relate some parts of the past with some parts of the future, just like an invisible chain; just like a ray of sunlight through all the fog.
Tlaloc_Temporal@lemmy.ca 2 months ago
I’d very much like to know when this happened. As far as I know, the magnetic field was pretty much the first field to be understood as such, and a quick search only turns up papers about measuring and modelling complex (imaginary) magnetic fields. Is this something like virtual particles?
I have mixed feeling about these. In fiction where you can actually go back and try again or see the future with some level of accuracy, there could be some compelling stories about following the causal chain and finding the lynchpin of something, or the far reaching implications of a decision, or even recursive causal chain building rapidly switching between making minute changes and massive paradigm shifts. There are definitely stories that do this, where a fate is defined and then fought against or worked around, but particularly when causality and worldlines get mentioned I see a different idea called “cannon events” that I really don’t like. Where no matter what else happens this one person will die on a specific day, or the evil organization must be allowed to exist. It’s a big cop out that says “the status quo is already the best it can be, don’t go trying to change it”. Sometimes that’s just trying to justify why fictional Earth with time machines still has dictators and not a huge past interventionist problem, but other times it feels very arbitrary, like groundhog day but it’s just accepting death by banana peel into train. It’s less like a causality that can’t be changed and more like being noticed by a vengeful trickster god.
I think a world defined perpendicularly to our understanding of time would either have any changes fully integrated into the past and future (which could be a huge writing load in fiction) or have massive seams where one causal chain encounters another. The boundary between these areas might even be fraught with sudden energetic bursts, like solar magnetic field reconnection.
In everyday life though, I don’t think strong causal chains vs chaos means much. Both mean there’s something out of our control, and if we can’t change that it doesn’t matter why. Maybe there are great causal chains fixing the future in place, maybe the future is chaos becoming what it may, either way what happens still happened. A universe on rails or on dice doesn’t change how we live, how we struggle, or the choices we make, it’s our limits and eachother that define the space in which we cause change. Where that chain of causes started doesn’t change that we’re in it.
That’s so many ungrounded thoughts and opinions though! The topic of this comment thread has changed like 7 times, I’m just having fun at this point. =D
gandalf_der_12te@lemmy.blahaj.zone 2 months ago
same for me :D
In fiction, the best way to resolve this I feel is to assume that nothing can be changed from before the first time machines were invented, because the first time machine sets something like an “anchor” that all other time machines can jump to.
I look at time in general a lot like water in a river. It flows from the river to the sea (no pun intended) only in one direction, but once it reaches the sea, it can move relatively freely in all directions. I think that time will lose its sense of unidirectionality at some point, but that’s solely my own hypothesis. I have zero evidence to back that up. It’s more or less based on the idea that time represents progress, and at some point our world will be “fully developed”, just like a child grown into an adult or an acorn grows into a tree. At that point, there is no more progress, and therefore, time kinda stops or becomes meaningless. Just that it happens at a cosmological scale, affecting all of humanity.
Tlaloc_Temporal@lemmy.ca 2 months ago
I actually have no idea how to conceptualize this. Every theory about the far future I’ve heard has assumed that time will move forwards, even if there’s hardly anything happening. Would a point where time changes flow back propagate to cause universe destruction before that happens? Would dark energy just rip everything apart? Is time driven by dark energy? Would everything just stop? Would some component of space become the new time? The Lorentz diagrams, they do nothing! Penrose can’t save me now!