Comment on They say in an infinite multiverse versions of you exist. Yet there's an infinity of fractional numbers between 1 and 2 with no whole number 3 between, so infinity can exist without every possibility.

• givesomefucks@lemmy.world ⁨8⁩ ⁨months⁩ ago

  This couldn’t work in reverse or independent of time.

  No, we can’t make it happen in reverse in the perception of time we need to have consciousness.

  It’s not that everything has to confirm to how we experience it. It’s that we can only observe things in the way we can experience it.

  Now, while Penrose finished up Einsteins work on relativity, I get most people do t know who he is.

  But even Einstein himself disagreed with you before Penrose finished it.

  Einstein’s statement was not merely an attempt at consolation. Many physicists argue that Einstein’s position is implied by the two pillars of modern physics: Einstein’s masterpiece, the general theory of relativity, and the Standard Model of particle physics. The laws that underlie these theories are time-symmetric — that is, the physics they describe is the same, regardless of whether the variable called “time” increases or decreases. Moreover, they say nothing at all about the point we call “now” — a special moment (or so it appears) for us, but seemingly undefined when we talk about the universe at large. The resulting timeless cosmos is sometimes called a “block universe” — a static block of space-time in which any flow of time, or passage through it, must presumably be a mental construct or other illusion.

  quantamagazine.org/a-debate-over-the-physics-of-t…

  Serious, if you’re saying time is constant and can only flow in one direction, you’re arguing with the literal foundation physics is built on.

  Time just isn’t a necessity for anything except consciousness.

  This is crazy complicated though, and I’m not even going to pretend to understand all of it. So it’s hard to explain. I’d suggest a lot of reading if you want to know more rather than me try to summarize.

  But yes, if you do the actual physics of something being set on fire, the equation works just fine both ways

  Instead of saying it can only work one way, it’s more accurate to say a consciousness can only experience it one way. Which might not even be technically true.

  A self contained universe with fixed energy and infite time will eventually see a pile of ash turned into an apple. And it wouldn’t violate a damn thing with our system of physics.

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  • TheChurn@kbin.social ⁨8⁩ ⁨months⁩ ago

    Beyond consciousness, the second law of thermodynamics also implies the presence and direction of time. In fact, it is sometimes called the Arrow of Time as it appears to direct physical processes to happen preferentially in the direction that increases entropy.

    A self contained universe with fixed energy and infite time will eventually see a pile of ash turned into an apple. And it wouldn’t violate a damn thing with our system of physics.

    This occuring spontaneously would indeed violate the 2nd law. This is a core disagreement between classical thermodynamics and statistical mechanics, which seems to re-derive classical thermo from probabilistic arguments over system states.

    I feel it also warrants stating that Penrose's theory is not widely accepted, has yet to be tested, and is based mostly on an argument to elegance - it "seems weird" for their to be uncountably infinite parallel timelines spawning at every instant. It is far too soon for it to be taken as fact.

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    • givesomefucks@lemmy.world ⁨8⁩ ⁨months⁩ ago

      This occuring spontaneously would indeed violate the 2nd law.

      It’s not spontaneous…

      It’s happening in cba order rather abc.

      Conservation of energy mate, whether it’s energy or mass, it’s not going anywhere.

      So in a contained universe, it doesn’t matter if it’s an apple releasing energy and becoming a pile of ash, or a pile of ash absorbing energy and becoming a perfectly normal apple.

      The net energy is still conserved. Just going from energy to mass unlike mass to energy.

      Like, think of it as a seed becoming a tree. Mass is being “created” from energy.

      But the laws of thermodynamics as were used to them are predicated on a linear one direction passage of time, because humans are the ones who explained it, and that’s the only reality our conscious minds can comprehend

      If what I’m saying doesn’t make sense, it’s because this is ridiculously complicated. Any flaws are because of me trying to explain it which is why I said if someone wants to understand more, they’re going to have to spend a lot of time really some really heavy scientific literature.

      I feel it also warrants stating that Penrose’s theory is not widely accepted, has yet to be tested, and is based mostly on an argument to elegance - it “seems weird” for their to be uncountably infinite parallel timelines spawning at every instant. It is far too soon for it to be taken as fact.

      You’re talking more about Penroses further hypothesis that consciousness is because of quantum collapse inside of the brain. That is where challenges arise.

      But Penrose is smart enough to say he doesn’t know everything, and he has spent decades talking about this stuff in the scientific community because he wants it challenged. That’s kind of how science works…

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      • TheChurn@kbin.social ⁨8⁩ ⁨months⁩ ago

        it's not spontaneous

        Spontaneity in thermodynamics refers to a process which occurs without external application of energy. In your description, a pile of ash becoming an apple is spontaneous.

        So in a contained universe, it doesn’t matter if it’s an apple releasing energy and becoming a pile of ash, or a pile of ash absorbing energy and becoming a perfectly normal apple.

        The net energy is still conserved. Just going from energy to mass unlike mass to energy.

        There is no mass-energy conversion in an apple burning to become ash, just the release of chemical energy from newly-formed bonds.

        Regardless, conservation of energy is only one part of how the universe operates. The second operating principle is (or at least from hundreds of years of scientific inquiry appears to be) the maximization of entropy. That is the 'spreading out' of available energy. This is the reason iron rusts, rather than remaining oxygen and iron - conservation of energy alone cannot explain natural phenomena.

        Spontaneous reconstruction of an ashed apple violates the second law of thermodynamics, and the Second law is no less valid than the First.

        Lastly, I was not writing specifically about Penrose's views on consciousness. His entire theory that gravity is driving the collapse of a wave function, and that said collapse occurs retroactively, is untested and based on an appeal to elegance. This does not make it wrong, but it most certainly should not be taken as true.

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  • Vendificate@lemmy.world ⁨8⁩ ⁨months⁩ ago

    Einstein abandoned the static universe theory when we confirmed expansion. Time is absolutely not constant but it is unidirectional according to Einstein himself after the Hubble Telescope verified that everything everywhere is expanding. The radius of the universe depends on time.

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    • givesomefucks@lemmy.world ⁨8⁩ ⁨months⁩ ago

      Einstein abandoned the static universe theory when we confirmed expansion

      If I showed you a 1 second video of an apple falling from a tree, would you say the apple would continue to fall forever? After all, the only evidence you have is the apple falling.

      Penrose, (who again was the one to finish up and prove a lot of Einstein 's work btw) believes we’re just looking at a very tiny piece of the puzzle. And Big Bangs are cyclical.

      bigthink.com/…/black-holes-prove-the-universe-kee…

      www.maths.ox.ac.uk/node/36137

      Personally I think it’s more like fireworks going off in the sky all over than one single repeating big bang.

      But Penrose literally just won a Novel a few years ago. He’s literally the person most qualified to talk about this. And he’s been doing it for decades. Right after he finished up Einsteins work.

      What you’re doing is like insisting the sun orbits Earth because that’s what accepted.

      Penrose is literally bleeding edge physics. Just because he hasn’t convinced everyone he’s right yet, doesn’t mean he’s wrong. Science moves pretty fucking slow, someone next generation will.probably price Penrose right, just like Einstein wasn’t proven right until Penrose and Hawking showed up to do it while working together.

      It’s literally how science works man…

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