Comment on I definitely never unsubscribed from a YouTube channel just for that...

• Tlaloc_Temporal@lemmy.ca ⁨3⁩ ⁨months⁩ ago

  Not every action needs a cause. Especially when entering the subatomic level, quantum effects appear to be fully probabilistic. Nothing causes the electron to emit a photon exactly then at exactly that energy, it’s just something that happens.

  Even at the largest scales, quantum effects have shaped the structure of superclusters of galaxies and in many models underpin the beginning of the universe.

  At these extreme ends, the concept of causality gets weaker, and asking “Why?” starts to lose meaning. You could say nothing caused many things, or equally say they happened because they could.

  In all cases encountered so far however, learning more has enabled us to identify new limits on possibility, and usually to narrow down on the details. It’s a practically endless series of "why"s that grow ever more exact, until we find the limits of what can be known. Maybe this chain has an end, maybe not, but to claim that science cannot answer any “Why?” is just wrong.

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  • victorz@lemmy.world ⁨3⁩ ⁨months⁩ ago

    Nothing causes the electron to emit a photon exactly then at exactly that energy, it’s just something that happens.

    I have to say this doesn’t sound very scientific to me.

    Science would settle at “it’s just something that happens”? Certainly not the scientist in me, lol. Everything that happens is driven by something, in my mind. Some process. Even if it “appears” probabilistic or whatever. Seems like a probabilistic model is applicable to the behavior, perhaps, but we can’t measure or see such small things so we can’t really make any more detailed models than that. Isn’t that right?

    So just because we don’t yet have a model for it or understand it fully, but we can describe it with some model, doesn’t mean we are finished or should stop there, IMO.

    It’s like saying the dinosaurs went extinct after the youngest bones we’ve found. Or that they are exactly as old as the oldest bones we’ve found. But, we haven’t found all the dinosaur bones, or at least we can’t know that we have or haven’t. And we definitely haven’t found the bones of those dinosaurs that didn’t leave behind bones.

    You feel what I’m getting at, kind of?

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    • Tlaloc_Temporal@lemmy.ca ⁨3⁩ ⁨months⁩ ago

      Oh, lots of physicists think the same way! Even Einstein did, nearly a century ago he said “God does not play dice with the universe”, because the popular Copenhagen Interpretation posits that the stochastic quantum wavefunctions are reality, that there is nothing more. Both Pilot Wave Theory and the insane Many Worlds interpretation are attempts at describing quantum mechanics without the inherent randomness, and there are even more less mainstream theories.

      Yet even today the Copenhagen Interpretation with it’s wavefunction collapse is still the most widely accepted interpretation among physicists. As of now, there isn’t any evidence for any interpretation, and just the barest logical evidence against some interpretations. We cannot tell even the general direction in which a better theory might be in. So far we can only describe the probability of things happening, and there’s nothing to say we need anything more than that.

      Perhaps one day we’ll have discovered that the universe is deterministic and causality makes sense at every scale, but that’s definitely not our current understanding.

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  • gandalf_der_12te@lemmy.blahaj.zone ⁨3⁩ ⁨months⁩ ago

    Sorry for taking so long to write a response. I had to think a bit about this.

    So, I don’t think it feels very satisfying to the average physicist to just say “well, atoms sometimes just spontaneously emit photons”. It’s a model that correlates well with our measurements, but there’s no proof that it is true.

    In some sense, the purpose of science is to make sense of the world, and it surely isn’t the most satisfying thing to be left without an ulterior explanation. That is why I think it is important to repeatedly ask why, until one finds the primordial source of causality.

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    • Tlaloc_Temporal@lemmy.ca ⁨3⁩ ⁨months⁩ ago

      Oh, 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.

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      • gandalf_der_12te@lemmy.blahaj.zone ⁨3⁩ ⁨months⁩ ago

        Thanks for elaborating. I think you have some interesting thoughts in that.

        Perhaps we’ll nail down entropy as a real property instead of just a statistical observation.

        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.

        But maybe we’ll find that causality isn’t so solid, with time-like paths everywhere, and determinism only at medium scales.

        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.

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