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can someone explain information loss paradox in layman terms without using any quantum physics terms...i read in some sites but i couldn't understand as they are explaining using some jargon terms...
I do not think that it is correct. GR is a causal theory. In principle, from the exact state of a classical black hole at a FINITE time after the start of collapse, you can reproduce the initial conditions of matter that were present before the collapse. (This is analogous to the fact that if you take a porno picture and cut it in a million of pieces and mix them all up, your mother/girl friend/wife can still reproduce the original picture. )Fredrik said:GR says the information is gone.
Since when is this true?… the principle of microreversibility, which has always held in classical and quantum physics, …
Demystifier said:Now, what is the solution of the paradox? To be clear, there are many proposals and there is no consensus among experts.
I think the problem that underlies all these primarily philosophical issues is that people continually treat any branch of physics, be it quantum mechanics or classical mechanics, as if they were intended to be, or succeeded as, axiomatically complete descriptions of reality. But they weren't, and they aren't. In quantum mechanics, there is no evidence at all that we gain insight into a macro system by describing it with a "wave function" (except insofar as one recovers the classical principles that underlie quantum mechanics), and in classical mechanics, we already know that the concept of an "exact trajectory" is inconsistent with precise observation. But above all, both of those theories are reversible in time, so we had to invent an entirely new approach, thermodynamics, to treat very complex systems. Now, who among us can claim the concept of "irreversibility" is not vastly effective at treating much of reality (and allows the patent office to duck the endless stream of perpetual motion inventions)? Yet this concept appears nowhere in either classical or quantum mechanics. If someone says, "there's no such thing as irreversibility in principle", I say, "you have a different interpretation of what a principle is than I do-- because I think irreversibility is as valuable a principle as any!"RandallB said:That is to say toss an unopened deck of cards into the Sun and by looking at the end products of the incineration we could determine the information printed on the cards to tell if it was a Poker or UNO deck of cards?
In principle that may be true for a Classical interpretation.
Actually, almost the opposite is true. The gravitational field is about the only thing a black hole has in common with a star.spidey said:the only difference between black hole and other other heavenly bodies like earth,moon is the heavy gravitational field...
A black hole doesn't have a surface.spidey said:if we drop some thing like my hard drive on Earth it will be on the Earth's surface and if we drop it on moon it will be definitely on the moon's surface...likewise the same hard drive should be on the black hole's surface,isn't it?
The hard drive can't come back in one piece from the region inside the event horizon, and its mass must eventually come back in the form of Hawking radiation. You got those details right, but it's still far from obvious that the information stored on the hard drive will be present in the radiation.spidey said:then how GR says information is lost ...information is on the black hole's surface,am i right?only difference is that hard drive can't come back to our world since the escape velocity is greater than c...and after some time because of hawking radiation my hard drive will come back to our world i think else law of conservation of energy would be violated...clear my doubts..
The geometry of space-time around the black hole will contain information about the matter that collapsed, but it won't contain all of it.Demystifier said:In principle, from the exact state of a classical black hole at a FINITE time after the start of collapse, you can reproduce the initial conditions of matter that were present before the collapse.
I don't think the idea of a zero mass black hole makes sense.Demystifier said:Quantum black hole creates pairs of particles. One of the members of the pair escapes from the black hole, while the other falls into the black hole and remains there. During this process the outside energy increases (due to the particles that escape), so the total energy conservation implies that the inside energy must decrease. Eventually, the energy of the black hole drops to zero. GR says that the black hole with zero mass contains nothing, i.e., that its information content is zero. On the other hand, this zero mass black hole should still contain the information carried by particles that fell into the black hole and remained there, i.e., the information content should not be zero.
He didn't say that they are. I haven't read his article recently, but it seems to me that all he says is that time evolution is reversible in both theories.RandallB said:From the Leonard Susskind article: Since when is this true?
QM and classical are not the same thing!
I don't think the claim is that we can really reconstruct the data. (If it is, I agree that it must be wrong). I think the claim is just that the quantum state of the matter after the black hole has evaporated contains all the information we would need to calculate the initial state. That state is of course unknowable. We can't even measure the direction of an electron's spin, so how could we measure the quantum state of the Hawking radiation emitted by a black hole?RandallB said:how can there be any “microreversibility” to reconstruct the data within the context of QM?
I think he's just saying that time evolution is given by exp(-iHt), which is a unitary (and therefore invertible) operator. I assume he's aware that it's not possible to measure a quantum state.RandallB said:Is Susskind trying to tell us for situations outside a black hole that Hawking and ’t Hooft have abandoned the HUP in favor a Super-deterministic version of BM.
Since classical and quantum mechanics both say that time-evolution is reversible, they both say that no information is lost when you throw something into the Sun. But GR says that nothing can ever leave a black hole. There isn't even any Hawking radiation in GR.RandallB said:That is to say toss an unopened deck of cards into the Sun and by looking at the end products of the incineration we could determine the information printed on the cards to tell if it was a Poker or UNO deck of cards?
In principle that may be true for a Classical interpretation.
But QM has an uncertainty principle that would make discovering that past information just as impossible to determine as predicting both the future location and momentum of an individual particle.
AFAIK the HUP still applies to QM, and this “paradox” being unique to black holes vs. information detail lost into the sun makes no sense.
The point if of course that if information really is lost, then QM is wrong!Ken G said:I just don't see the value of arguments that start out "assuming quantum mechanics is a complete description...",
It does, at least formally, as a mathematical limit of the black hole with the mass M->0.Fredrik said:I don't think the idea of a zero mass black hole makes sense.
You missed the point. The black hole evaporates, so at the end there is no black hole in which information could be located.spidey said:In this case, we know the location which is the black hole then why we say information is lost and have to worry about it...
Any Cauchy surface (which includes both the exterior and the interior of the black hole) will contain ALL information about the matter that collapsed.Fredrik said:The geometry of space-time around the black hole will contain information about the matter that collapsed, but it won't contain all of it.
But I'm saying that we don't have "right" and "wrong" in physics, and never did-- all we ever had or have is "is successfully chosen to treat this situation". That's why we still use Newton's laws far more often than Einstein's treatment in published papers on dynamics. The question is not "is quantum mechanics right", it is, "why on Earth would we ever want to put that question as if it was a meaningful absolute?" Physicists throughout history made that mistake: "assuming our current understanding is complete, we may infer..."Fredrik said:The point if of course that if information really is lost, then QM is wrong!
That doesn't sound right to me, but I haven't been able to find an argument that proves you wrong, so maybe you're right.Demystifier said:Any Cauchy surface (which includes both the exterior and the interior of the black hole) will contain ALL information about the matter that collapsed.
Yes, theories aren't really "right" or "wrong", they are only consistent with experiments to various degrees. Anyone who knows anything about physics knows that. But the thing is, quantum mechanics has so far been 100% consistent with all experiments. It would be a major discovery to find something that can't be described by quantum mechanics.Ken G said:But I'm saying that we don't have "right" and "wrong" in physics, and never did-- all we ever had or have is "is successfully chosen to treat this situation".
It isn't a mistake when these guys are doing it. It's more like assuming that the square root of 2 is rational in order to prove that it isn't. These guys are just trying to do verify that there's a contradiction between theories, and then learn something from it.Ken G said:The question is not "is quantum mechanics right", it is, "why on Earth would we ever want to put that question as if it was a meaningful absolute?" Physicists throughout history made that mistake: "assuming our current understanding is complete, we may infer..."
You mean all experiments for which it can be used to make a testable prediction. We are not talking about that here, this is my point. What is the test on the table here?Fredrik said:Yes, theories aren't really "right" or "wrong", they are only consistent with experiments to various degrees. Anyone who knows anything about physics knows that. But the thing is, quantum mechanics has so far been 100% consistent with all experiments.
Thermodynamic reversibility can't be described by quantum mechanics alone. I think you mean it would be a major discovery to find something for which quantum mechanics makes a testably wrong prediction. If so, then I agree. But that in no way suggests we should use quantum mechanics to build philosophies around things we cannot even think of a practical test.It would be a major discovery to find something that can't be described by quantum mechanics.
My contention is that they are only learning something if they take their theories to be something they are not-- something other than a means for making testable predictions or ways of organizing existing data.These guys are just trying to do verify that there's a contradiction between theories, and then learn something from it.
But to examine that, we have to ask, what would have happened if the speed of light was so great that there was never an experimental way to decide between Newton and Maxwell? Of course the conclusion would have been what it actually was-- that Maxwell's theory only applies in the frame of the ether, we just don't have the experimental precision to tell what that frame is. But my way of thinking would have led instead to the conclusion that the contradiction is as irrelevant as the number of angels that can fit on a pin-- until there is a difference in a testable prediction. I'n not saying there's no point in looking for inconsistencies, I'm saying there's no point in looking for untestable inconsistencies- because consistency is only a requirement if one thinks that our theories are something more than what they are. I would say that inconsistency is only a factor to take into account when choosing the theory to apply, and I cite as evidence all the times we use Newton's laws instead of Maxwell's equations to treat electrodynamical systems of slow-moving charges.This isn't any different in principle than to study the contradiction between Maxwell's equations and Newtonian mechanics. Special relativity could have been discovered even before the Michelson-Morley experiment just by noting that there is a contradiction between the best theories of that time, and by trying to answer the question "what do we have to change to avoid the contradiction if we don't change Maxwell's equations?".
Ken G said:Now, who among us can claim the concept of "irreversibility" is not vastly effective at treating much of reality ...
Yet this concept appears nowhere in either classical or quantum mechanics. ...
... I think irreversibility is as valuable a principle as any!"
I just don't see the value of arguments that start out "assuming quantum mechanics is a complete description...",
NO.Fredrik said:Since classical and quantum mechanics both say that time-evolution is reversible, ...
GR says that nothing can ever leave a black hole.
There isn't even any Hawking radiation in GR.
The point is of course that if information really is lost, then QM is wrong!
But there are two issues there. The first is, if there was no HUP and classical physics worked "all the way down", would there be no irreversibility? I think you agree there would be, so the HUP cannot be the source of irreversibility if the latter would exist even without the former. The second question is, is there a form of irreversibility that is special to quantum mechanics, that does come from the HUP? I haven't seen one yet, because systems that exhibit the HUP are generally still reversible (like quantum "erasure"). To me, a good analogy is if you put cream in coffee and stir (irreversible due to turbulence), versus put cream in very thick oil and stir (nonturbulent viscosity). The latter can be reversed if the viscosity is high enough, you can "unstir the cream". Quantum mechanics, even with the HUP, tends to act more like the latter-- as long as you never couple to any classical systems that introduce noise (which returns to the cream-in-coffee analogy and is classical irreversibility).RandallB said:IMO "irreversibility" is an inevitable consequence, and can be directly derived from the HUP in QM.
But I'll bet that you are imagining that either or both of the "past configuration" and "current reality" are classically determined, i.e., they introduce the classical concept of irreversibility at some point or other and are not purely quantum mechanical in nature.In the same manner, QM in principle would have no expectation of being able to define a single specific past configuration necessary to establish our current reality.
Ironically, quantum mechanics in its purest form (which includes the HUP) is a perfectly predictable theory-- we can predict the wave function perfectly. We just can't predict how it will couple to classical irreversibility when we make a measurement-- but again, that's classical irreversibility, not quantum mechanical.Therefore, the reversibility of information is just as uncertain as the predictability of the future.
I can't speak to that point, I'm not knowledgeable on Susskind's argument.The argument that Susskind is promoting in his article may apply to defending such a principle in classical or GR theories, but I find the argument that the principle applies to QM as simply misguided very likely wrong and certainly not demonstrated to be more complete than CI-QM.
I did not represent that as a CI-QM position, but rather as the position that I see quite often when people talk about perceived weaknesses in CI-QM. Indeed, I think CI-QM is at times itself a bit over-interpreted, but less so than most of the rest.As to those that begin by "assuming quantum mechanics is a complete description..."
That misrepresents what Niels Bohr said and meant by CI-QM.
I agree that there is no more complete interpretation, because "more complete" to me means "is able to understand more observations". But as I said, I don't think the uncertainty principle controls irreversibility because it does not mediate the destruction of information, it mediates the existence of information in the first place. It is the classical couplings we use in our science that do the destroying, and that is classical irreversibility.IMO no one has established a more complete interpretation of QM, which would eliminate the uncertainty principle to allow the reversible reconstruction of destroyed information.
Sorry I cannot get past your first two sentences so the rest is of no help. You appear to be contradicting yourself. If I follow you negatives correctly I would agree that in “all the way down classical physics" there would ‘be no irreversibility’.Ken G said:But there are two issues there. The first is, if there was no HUP and classical physics worked "all the way down", would there be no irreversibility? I think you agree there would be, so the HUP cannot be the source of irreversibility if the latter would exist even without the former.
Oh, that surprises me-- I thought you recognized that irreversibility was also a classical concept. Indeed, it's usefulness as a principle greatly precedes quantum mechanics. Are you saying you think that heat doesn't flow from cold to hot because of the HUP? If so, why did it not surprise Lord Kelvin-- he didn't know quantum mechanics.RandallB said:If I follow you negatives correctly I would agree that in “all the way down classical physics" there would ‘be no irreversibility’.
What do you mean by ATWD?Meaning YES reversibility is expected to allow reconstructing the original conditions that created our current condition in a supposed ATWD Classical view.
Those were all pretty absurd over-interpretations of classical mechanics. There was zero evidence for any of them, and scads of contrary evidence, long before quantum mechanics. Are you saying the patent office should have been considering perpetual motion machines right up until quantum mechanics was developed? Why was it called the second "law" of thermodynamics, if it flew in the face of classical physics?Including recovering lost information.
Goes along with Classical predetermination, preordained future and lack of free will.
But actually, the HUP leads to no new irreversibility problems that were not already there. You never encounter any irreversibility stemming from the HUP unless a classical system is involved somehow. Unless you know of a counterexample that I don't.MY point still is, that in comparison to that the HUP is the theoretical source for an irreversibility principle, NOT ATWD Classical or GR for that matter.
Yes, my thinking we'd agree on that first part made the second part hard to discuss!Relook at your logic and see if I’ve misread your opening comments somehow.
Don’t see how the rest can mean anything if we are not clear on this.
It is the version of Classical I thought you were discussing.Ken G said:What do you mean by ATWD?
But ATWD, that you brought up, is a version of Classical and the only one I can see that Hawking Susskind et.al. can be thinking of to claim “information should not be lost”. And I can think of no interpretation of QM that would indicate “information should not be lost”, if you know of one let me know.Those were all pretty absurd over-interpretations of classical mechanics.
Oh I see, gotcha.RandallB said:It is the version of Classical I thought you were discussing.
You said (All The Way Down) didn’t you – just shorten it to ATWD Classical.
Actually, I would argue that this is something added to ATWD Classical. The latter only says you can map input uncertainties into prediction uncertainties, and invert them too. It never says you can recover the initial state, precision limitations and Lyapunov exponents being what they are. You might way "I mean in principle", but I'm talking about a principle too-- the principle of practicality in science, that what cannot be tested is not scientific. This is quite relevant to the discussion at hand-- when insurmountable practical limitations surface, those limitations are ingrained in science too.Do you remember what that is – the billiard ball example where with perfect knowledge ATWD to the finest detail of the movement of several balls on the table you should be able to calculate backwards to their original paths and interactions until you get down to a single ball rolling away free from the other stationary balls.
Right-- ATWD Classical, like the rest of physics, is a collection of axioms we invoke whenever we decide we need them. It is not intended to be a complete description of reality, and why people thought it was just indicates to me they were confused about what science was-- and still is.Good point about thermodynamics, but that is a different interpretation of Classical than ATWD Classical. You cannot make a meaningful agreement by using two different theory versions without making clear the difference between them and when you are applying which version.
I think they were talking about the time reversibility of every dynamical equation they view as fundamental in the physics they were doing. That was inconsistent with the boundary value problem applied to a black hole solution. So we have a set of dynamical equations that are not consistent with a boundary-value problem. So what? We just pick what we want in every situation-- when will we stop imagining that physics is different than what it has always been?But ATWD, that you brought up, is a version of Classical and the only one I can see that Hawking Susskind et.al. can be thinking of to claim “information should not be lost”.
I point to the invertibility of unitary time-evolution operators. Why does that not make quantum mechanics information-preserving?And I can think of no interpretation of QM that would indicate “information should not be lost”, if you know of one let me know.
The HUP is a constraint on the information that is present, not on what survives extraction. The latter would get us into "collapse of the wavefunction" issues that have nothing to do with the HUP and would further muddy the water.If as you say it is not a matter of an interpretation being “ right or wrong in physics” I would certainly consider it a incorrect application of HUP. My point remains; there is no QM justification for expecting “information should not be lost”. (ref. HUP)
That would be a confusing point to make, because although I agree it is also absurd, it is absurd for different reasons. The information loss you refer to is actually something that is "lost in translation" from the quantum to the classical realm (again getting into wavefunction collapse issues). That is not the same as the way information is "lost" in the purely classical realm-- which is a practical matter having to do with what we are actually capable of tracking with any given experimental apparatus (which might be very similar to the wavefunction collapse issues, but again is not the meaning of information being used here).The point you should be making is that ATWD Classical thinking that “information should not be lost” is just as absurd an idea to hang on Classical.
Physics theories are not "wrong", as I said, they are "not accurate enough" or "incapable of addressing the question I am interested in". In your way of thinking, the vast majority of all published papers in physics are "wrong". That is a curious interpretation of the meaning of that word. It has formal validity, but science has never been a formal undertaking-- even when it sets up axiomatic structures, it chooses from among them in a nonformal way.And based on the well accepted Thermodynamics Interpretation of Classical there is no Classical reason for expecting “information should not be lost” either. (I.E. ATWD Classical is incorrect if not 'wrong')
The two do not "talk" to each other in that manner. Neither can be used to derive the other, they each stem from their own separate axioms. The HUP comes entirely from the Schrodinger equation (does it not?), and that equation describes perfectly time-reversible behavior.I can see where QM-HUP can lead to Thermodynamics; I’m not so sure thermodynamics could lead to the overall principal of HUP.
Fredrik said:The geometry of space-time around the black hole will contain information about the matter that collapsed, but it won't contain all of it.
IMO the “all the way down” version implies super-determinism and I take that and the ATWD expectation both to be Wrong.Ken G said:Oh I see, gotcha.
Actually, I would argue that this is something added to ATWD Classical. The latter only says ...
I take “Wrong” as an opinion that can vary based on the evidence and who is convinced by it.Physics theories are not "wrong", as I said, they are "not accurate enough" or "incapable of addressing the question I am interested in".
In your way of thinking, the vast majority of all published papers in physics are "wrong".
I know next to nothing about “unitary time-evolution operators”, do people believe it overcomes the uncertainty principle included in HUP?I point to the invertibility of unitary time-evolution operators. …
The HUP comes entirely from the Schrodinger equation (does it not?), and that equation describes perfectly time-reversible behavior.
The theory is built to be super-deterministic-- this "implies" nothing! That's my whole point, we keep mistaking the axioms we choose to accomplish various things as though they told us something fundamentally true about reality. Why do we do that? To me it is an obvious over-extrapolation of what science is. Yet we do it so automatically I often have trouble making people see that this is at best not necessary to science, and at worst it is unscientific.RandallB said:IMO the “all the way down” version implies super-determinism and I take that and the ATWD expectation both to be Wrong.
Why do people think that their personal philosophy is relevant to science? This gets back to what I was saying above, it's just a mistaken idea of what science is. It isn't a philosophy engine-- you are welcome to be any kind of "ist" that lights your fire. If anyone tells you that you are "wrong", they've already removed their scientist hat and put on their own "ist" hat. But if they challenge you to show that your philosophies have any scientific merit, then they are still being scientists.For example I’m a Local Realist which means the majority of science considers my belief that there is a more complete explanation to reality than QM can provide as “Wrong”.
But that's just what I'm talking about, I don't see that as scientific language. Something is incomplete, yes, but we are always foolish to expect otherwise, in every case. Newton's laws (with the implied Galilean relativity) makes less accurate predictions than Einstein's relativity, so I guess you would say it is "wrong", but it gets used far more often in physics publications (especially astrophysics) than does Einstein's. Why are so many papers "wrong", and how do they get past the referees?For example I think it is clear that QM & GR are fundamentally incompatible in principle and they both cannot be Right, therefore something must be wrong.
You can't do one without the other, or you can't referee all those papers.I’m more interested in figuring out what is wrong, to get to a more correct solution than worring about how the wrod 'wrong' is used.
It doesn't "overcome" the HUP, it explains what it is. But one doesn't need the mathematical formalism, just think about water waves. Water waves demonstrate a principle very analogous to the HUP-- if you try to limit the width of the "throat" they pass through, they spread out (constraints on the position of the source implies lack of constraints on the spread angle of propagation). That's a property of waves, of their reliance on interference to determine how they propagate. Is a water wave irreversible? Watch what happens when you dip your finger in the exact center of a coffee cup.I know next to nothing about “unitary time-evolution operators”, do people believe it overcomes the uncertainty principle included in HUP?
Time reversibility is different from super-determinism, but it would seem to have a lot to do with information conservation.If "perfectly time-reversible" can mean super-determinism I'd consider it wrong, but I suspect HUP is still contanined within Schrodinger.
But that is why different philosophies are directly relevant to science.Ken G said:Why do people think that their personal philosophy is relevant to science?
But if they challenge you to show that your philosophies have any scientific merit, then they are still being scientists.
Why are so many papers "wrong", and how do they get past the referees?
But it does not explain what HUP is, it only gives an analogy of it. And the water wave is not reversable, regardless of appearence. Sure you can even remove your finger with perfect timing so as to make the water ‘feel’ it returned the energy that first created the waves to attempt to leave the water perfectly flat as if the finger never touched the water. But an incorrect analogy of nature because it is incomplete; a detailed snapshot of a little wave approaching your finger will show it does not reconstruct and conserve the information contained in the snapshot taken of the apparently identical looking wave departing your finger a moment ago. Individual particles of water and items of fluff floating on the water are rearranged as dispersion has moved them to new locations.Is a water wave irreversible? Watch what happens when you dip your finger in the exact center of a coffee cup.
Time reversibility is different from super-determinism, but it would seem to have a lot to do with information conservation.
New concepts come from the same place they always have-- unexpected experiments or observations, not philosophies.RandallB said:But that is why different philosophies are directly relevant to science.
Where else do new concepts about the fundamental nature of reality come from but from differing views or “scientific religions”
The role of the referee is to evaluate the axioms chosen, not from the perspective you discussed of what is "right" or "wrong", but rather what is or is not appropriate to the goals of the investigation. That's the point, "doctrine" and "philosophy" should play no role at all. That may not always happen in practice, but I brought it up because you said that you can evaluate what is "right" without first tailoring the very meaning of that word to the given situation.It is not the job of referees to decide if the philosophic belief that might be contained within an idea; it is actually a problem that they often do reject scientific doctrine not in line with their own even if the ideas in the papaer may be workable.
I agree-- which is exactly why you do have to first consider how the word "wrong" gets used before you can be a referee. You said that your interest was only in what is more accurate, and that's fine for you, but it means you cannot be a referee. I was establishing the importance in not applying black and white meanings of right and wrong to theories, especially when based on a philosophical rather than a practical stance.And papers shouldn’t be considered Right or even Accurate because they are published, only useful.
That is the point I am making. Contrast that to "the search for the right philosophy".For example there are several models proposed for an atom (cubic, plum-pudding, Saturnian, Rutherford, Bohr) using any of those is not a disqualification for a paper; Only that the ideas and how they are used may actually be useful in the context of the paper.
Again, you are only repeating my point. You said that you personally were "more interested in figuring out what is wrong, to get to a more correct solution".For example, Bohr circular orbits in the Bohr Atom is well understood to be wrong and an incorrect description of atomic structure. But even modern papers still use Bohr circular orbits as an analogy of reality that accurately helps describe fundamental elements of nature such as the fine structure constant. ]
I don’t think the current scientific consensus that these atomic models are ‘wrong’ yet some remain useful as scientific analogies of reality, will ever change to declare one of them as a correct and complete description of atomic structure.
I'm there already. I take it as the default position of science that our search is for accurate analogies of reality, not "a complete description". When did we start thinking we were doing something else? Or I suppose the better question is, when should we have stopped thinking that?In the same way I believe QM will always serve as an accurate analogy of reality but someday we will be able to demonstrate that QM and Bohr as wrong to consider it a complete description of reality.
We never explain what anything is. Do we explain what gravity is? Or time? We have no idea what these things are, but we build models for how they work or ways to measure their results. That's why we will never have a "complete description", the best we can do is unify what we have found to work. Even that seems unlikely to me, but the effort is noble as long as we don't mistake it for something it isn't.But it does not explain what HUP is, it only gives an analogy of it.
If that were true, then no analogy of nature could possibly be correct, because as we agreed, no analogy of nature is complete. An analogy need not be complete to be correct-- that would be an identity, and would not even serve the purpose of an analogy.But an incorrect analogy of nature because it is incomplete;
I didn't say the information in the particles was reversible (they are a complex system, which is from whence I claimed all irreversibility originates), I said the information in the wave was reversible-- the latter being the analog of the HUP.Individual particles of water and items of fluff floating on the water are rearranged as dispersion has moved them to new locations.
But the mechanism you cite, the action of the particles, has nothing to do with the HUP-- that action was happily considered irreversible long before quantum mechanics, that's my point. It is not something fundamental that makes it irreversible, it is how we choose to treat the system, out of practical considerations. Again, it is not "what is right", it is "what axioms we choose and why".This like many other examples support HUP & the one way direction of thermodynamic entropy, and tells me that “information conservation” should not be considered a requirement of reality.
Refuting that is why I mentioned the information reversibility in a wave that is governed by the classical analog to the HUP.And IMO HUP defines QM as not requiring information conservation.
It is not the universe that is either reversible or super-deterministic, it is our chosen axioms that either are or are not. The axioms of quantum mechanics are reversible and deterministic, but not super-deterministic because they are unpredictable in how they will couple to the complex classical systems that make measurements.To the extent that some issue refereed papers stating otherwise; I’ve not seen any give satisfactory detail on how information is conserved from the past anywhere in nature, without nature propagating a Super-deterministic future.