• SlayGuevara@lemmygrad.ml
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    14 days ago

    Started college again this week. I’m a bit older than the other first years. Someone asked me about a class today thinking I was a teacher lmao. I’m not THAT old.

    We also had a protest this weekend at a local town where a refugee center will be located. A Dutch far right leader came to speech and there was a counter protest. We turned up with like five times as many people. It was great.

  • SlayGuevara@lemmygrad.ml
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    12 days ago

    It’s been nearly a decade since my last physical labor job and I kinda forgot the shit diet people have. Especially now because I want to eat healthy myself. Like we are out cutting trees, lifting heavy and whatnot and these people get by on some simple sandwich with a slice of salami or an egg. And lots of cigarettes and coffee.

    Meanwhile I am here with my wraps with tofu, avocado and vegetables lol. These people are either scrawny as hell or overweight but all of them are tough as a nail. I’m covered in scratches and dirt myself but at the end of the day it feels very rewarding being out there doing all this. Much more than staring at a screen all day in my opinion.

  • SlayGuevara@lemmygrad.ml
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    13 days ago

    Surreal scenes on a Dutch talkshow where a scientist was sounding the alarm on climate change followed by a guy who was praising China’s efforts on combating climate change saying their models might be the way forward. What is happening?

  • ☭CommieWolf☆@lemmygrad.ml
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    12 days ago

    The actions of the US over the last few years have been so blatant, both in rhetoric and execution, that I thought for sure this would be a radicalising moment for the majority of people to realise that the country, or at least it’s ruling class, is inherently malicious and dangerous.

    Unfortunately this isn’t the case, US propaganda is so effective that most people in the West who do have negative opinions of their country’s actions, simply chalk it all up to Donald Trump. Is that really the best they can do? Turbo Trump derangement syndrome instead of some genuine awareness? Fuck these people just as much as those who enthusiastically support the imperialism, their ignorance and lack of investigation is yet another pillar on which the Empire can stand.

    • amemorablename@lemmygrad.ml
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      12 days ago

      These things don’t happen all at once, or all organically. The conditions make it easier to get through to people on a point like this, but they will still benefit greatly from guiding voices. The media apparatus is practiced at redirecting people’s ire in various wrong directions, so part of our task is getting past that to make sure people are not being led astray.

      The other thing to keep in perspective is that “the majority” is a lot of people. It would be unreasonable to expect that outcome in any country, while the various state apparatuses and inertia are in place. What is most needed as a foundation is people who can build an alternative. It’s not as though western countries are going to pass a threshold of disliking the government and then automatically press the revolution button. Probably what would happen if the majority saw it as fundamentally awful, is the exploiting classes would sell them on the idea of reformists in office and some people would fold on their views if/when they see the system reforming at all.

      Point being, popularity/unpopularity only goes so far. Organizing and tactics are what turn potential into substantial change.

    • Ember_NE@lemmygrad.ml
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      12 days ago

      I think it makes a lot more sense when considering that they are just labour aristocrats justifying themselves. But it is still a opportunity to help people recognize reality I think

    • Commiejones@lemmygrad.ml
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      12 days ago

      You are in the belly of the beast as it is filling up with poison but it just wont vomit.

      Agitprop is a material condition. Your voice can be a quantitative change that pushes the qualitative change. I believe in you.

      • ☭CommieWolf☆@lemmygrad.ml
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        9 days ago

        No, no I am not. It is not my responsibiilty to get US libs to gain class consciousness. My priorities are to myself, my community, and at the very most my own country’s politics. All I can do is say what I see when it comes to the US, to make a change happen is primarily on the shoulders of socialists and communists in the US, however many there are. I can’t go organizing on the ground in the US, only they can, and they have my respect, but sadly, not my confidence.

    • -6-6-6-@lemmygrad.ml
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      11 days ago

      Is that really the best they can do? Turbo Trump derangement syndrome instead of some genuine awareness? Fuck these people just as much as those who enthusiastically support the imperialism, their ignorance and lack of investigation is yet another pillar on which the Empire can stand.

      Settlers talks a bit about this. It’s why I’ve given a chuckle when the people on here are like “Just go out and talk to people!” when most Americans don’t give a shit about politics or economy; at least not enough to actually get up and do anything about it or actually want to see you dead for even suggesting the idea that their distant family relative who’s the only successful one in the family has to change his ways. God forbid.

      One of the reasons I ended up moving out of the last state I was in was because I “talked to people” and ended up getting some pretty actionable threats while I was there. These days, I care about my partner and those whom the threats were directed at as it is an “interracial marriage”. How am I supposed to have compassion for a genocidal, imperialist country built quite literally on the bones of entire civilizations or for the people in it that love it so much? Now the same things are beginning to repeat here as I participate in my local IWW branch.

      I still encourage people to go out and talk to Americans. I just don’t think there is gonna be any of that rosy, working-class rabble-rousing that most people on the board seemingly have at least once a year. The experience I got was reaching through a few people who are lower-class, working proles who have absolutely no power or will/freedom to actually participate in organizing. The rest are frothing fascists; most don’t even realize they are.

      I’ve been more successful in “recruiting” and organizing from different countries than I ever had with Americans; and I live in America.

      • pronounced ɱɐɢ @lemmygrad.ml
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        10 days ago

        Tried to talk to the statesian partner of one of my friends (she called herself a leftist). Said I had something for her to read and immediately got shot down when she told me no matter how short it wqs she wasn’t gonna read it cause she just doesn’t read. Gave up.

        For the record they’re both mildly well intentioned libs. (Very mildly, they are so fucking apolitical it makes me mad).

        • -6-6-6-@lemmygrad.ml
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          9 days ago

          A lot of the people on here seem to have more experience and deal with liberals and left-leaning folk far more. In my case, I tend to try to recruit from the apolitical “right” that has been in there sphere of influence for right-wing politics from family or friends. Best way I can describe it is people who have grown up in that propaganda their entire life and are just starting to question it.

          Otherwise, I have had far more receptive people from Eastern Europe and Turkey for example than any “fellow” Americans.

    • demeritum@lemmygrad.ml
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      10 days ago

      The average American has far more amenities than the average European, and the latter is already an extremely wealthy and privileged population compared to the rest of the world. Many Americans don’t want to realize that but it’s true.

      People will change into the direction you want once their material conditions are in the right place for that to happen- And you need to be there to show them the right way forward.

      • Makan@lemmygrad.ml
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        9 days ago

        Ehhhhhhhhh

        I am in Europe and the average European clearly lives better than the average American in every metric possible.

        I lived in a very noisy Latino/a neighborhood in Virginia.

        It was terrible.

        No walkability.

        No basic services (or they were so obscure or obtuse and not readily available that people didn’t know about them).

        Racism, sexism, transphobia, etc.

        Nobody knew their neighbor or recognized anyone.

        Just… insufferable.

        Everybody was pissed off or mentally ill (I hate the term “mentally ill,” but they were very depressed and had a lot of, I would argue, “psychological damage,” never mind the trauma, which I would argue is somewhat separate).

        I am in Spain, which is technically better than most European countries, but of course, has multiple problems, true enough.

        But truth be told: I cannot fathom Virginia or even the wider United States being better than Spain by any metric whatsoever.

        Idk. Maybe a mental block for me at this point.

        To be fair, a good Greek comrade once told me that “Greece is America in 5 years.”

        I do get the sense that Europe is headed that way.

        But honestly, for the time being, in most places, it seemed better than the United States, imho

  • SlayGuevara@lemmygrad.ml
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    10 days ago

    I have entered the secret world of tradesmen. Multiple workers in their vans have waved at me or let me pass on my bike ride to work. I have received multiple sympathetic nods from fellow workers on the way home after a day of working your ass off.

    It is tiring and energizing at the same time to dig a trench for 8 hours a day. At least I now know how to efficiently dig a trench.

    • Makan@lemmygrad.ml
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      10 days ago

      Trades are lit

      I know that leftists, especially in America, seem to look askance at them, partly because the trade unions can be very conservative.

      But a lot of some great and very radical friends of mine are in the trades labor unions.

      I want to go into them myself now that I am in Europe.

      Also, in America, there are a lot of very radical trans organizers making big wins in the trades.

    • amemorablename@lemmygrad.ml
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      11 days ago

      The mainstream western platforms have so much brain poison. Which I say with some reservation because Twitter did help me reach ML at some point in time, so not like it’s all bad, but that was also pre-Musk-takeover. After him, it seemed to slowly deteriorate into little more than bots and neo-nazis with leftish twitter more marginalized.

      And I mean, even back then, it had plenty of brain poison and false paths to get lost going down. I do not miss the cortisol spikes (not sure if I’m being figurative or literal) from reading the latest Twitter beef and being very careful not to get involved, so as not to suddenly have ire turned on me over a phrasing misunderstanding in my notifications. I never liked how it had this embedded status-based dynamic, where small accounts basically had to ingratiate themselves to the ones with lots of followers, or else risk getting quote tweeted and bombarded because they said something that set the person off. I found that a lot of mid-sized accounts (decent number of followers, but not like in the tens of thousands or something) would have a tendency to act like you were in their house invading their personal space when replying to them, instead of it being a public forum, which only made the angst worse over minor misunderstandings and confrontations. And to some extent, I couldn’t blame them for acting that way about it because it wasn’t like they were necessarily wanting to be a minor e-celeb. They may have more so stumbled it because they were witty, or because they happened to exist as a girl on the internet with a conventionally attractive pfp pic and so were getting guys chasing them, or sometimes a combination of the two.

      In retrospect though, it’s not at all surprising that a society like the west’s would produce such an unhealthy and stratified-feeling “social media” platform like Twitter.

    • Makan@lemmygrad.ml
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      10 days ago

      The medium is the message.

      Twitter was designed to destroy good communication, imho

  • TabularTuxedo@lemmygrad.ml
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    12 days ago

    I used to read Wikipedia and watch “left” YouTubers a lot in the past. I read a lot of smear against China but that changed really quick after reading about it.

    In retrospect, I think the main reason for this quick change was that I wasn’t emotionally invested in it. Like, the Wikipedia page for the Uyghur “genocide” doesn’t have any images of a malnourished person like the page for the Holocaust has. There wasn’t any punch to my gut, so to speak.

    • demeritum@lemmygrad.ml
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      10 days ago

      People who still think the Uyghur genocide or the Ukrainian genocide by Russia is real after living through the current Palestinian genocide are beyond daft - like you saw plenty of visual evidence of it happening done by a government shielded by the west with a lot of very powerful people censoring it- And you think somehow the United States who controls the skies and spies on nearly every single grain of sand would not blast visuals of the supposed genocides of their political rivals everywhere??

      • TabularTuxedo@lemmygrad.ml
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        10 days ago

        Imma be honest. It’s pretty easy to be insulated into an echo chamber when you really want to. Speaking from personal experience.

        Like, from 2023 to 2025, I straight up didn’t know about the Palestine genocide. Most of my contact with the topic was through my parents watching MSM, which obviously didn’t depict Hamas or Russia in a good light. I didn’t know why there were hostages and stuff.

        The reason was that I was an “apolitical” chud (because of religion, but that’s another topic) and avoided news like the plague, and the social media algorithms really didn’t recommend them to me.

        I really think that I would’ve benefited from someone pushing me to confront my biases. I was a good kid but extremely ignorant and conflict-averse.

        • demeritum@lemmygrad.ml
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          10 days ago

          My point being that if Russia or China did genocides even you back then would have seen visual evidence of it- the algorithms and MSM would have shown it throughly.

          You can live in certain echo chambers in the west, yes, no doubt about that, but only certain topics can be avoided with such ease and its the topics that make the west look bad, not the other way around.

          • Makan@lemmygrad.ml
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            9 days ago

            Yeah

            But keep in mind:

            “Genocide denial” is anathema to moral and civil discourse and general society.

            Not without reason or merit, mind you, I would argue.

            But

            It is an example of corporate news, governments, letter agencies, etc. trying to use people’s emotions and values and morals to get them to support their side, their capitalist dominant narrative.

            Honestly, pointing out that there is ample evidence for the ongoing Palestian genocide right now (never mind the wider Nakba that’s still going on as well) and showing how little evidence of, say, the Uyghur genocide there is (some vague satellite images, that picture of an Indonesian prison that gets floated around, etc.) is not a bad tactic.

            I’m sure that conservatives and liberals will continue to argue on and on and on, though I think many will be on worse footing (if you’re trying to convince others; try not to get into Internet arguments willy-nilly, just pick your battles wisely for the sake of your time).

    • Makan@lemmygrad.ml
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      9 days ago

      Ah

      I guess you became an ML around the time of what I call the “2020 - 2021 wave” of new MLs.

      (before that, there was the “2016 wave,” the “2008 - 2009 wave” with the recession, etc.)

      Honestly, I think we are sort-of going through a “new wave” (in particular, 2025 - 2026).

      Anyway, honestly?

      Don’t sweat it. I was radicalized around the year 2010 (I believe this was in the lead-up to the War on Libya) but that doesn’t make me superior to you (or anyone else that was radicalized beforehand way before, FYI).

      What matters it that you’re here. Kick ass and all that. But try not to fall into dark spirals and dark rumination spirals or thought-loops.

      I learned that the hard way.

      Be optimistic, even just remind yourself of the good things (liberals will tell you to “gratitude journal” or whatever, but I’m telling you, as an ML, to be positive (if you can in the moment, that is; don’t force it) and think of all the opportunities and victories yet to come, never mind the opportunities and victories popping up now.

      Cheers!

      o7

        • Makan@lemmygrad.ml
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          9 days ago

          Yeah, my apologies, thanks for clarifying, maybe I misread what you said intially.

          I can see that you are just starting your journey in a way.

          • TabularTuxedo@lemmygrad.ml
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            9 days ago

            Yeah, and I’m enjoying the journey thus far lol. Also, enjoy your trip in Spain. I hope I will visit Spain in the future.

  • demeritum@lemmygrad.ml
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    9 days ago

    People too online are whining about Magneto potentially being rewritten as a victim of ICE and not a holocaust survivor - As if he was not changed from romani to jewish in the 80s.

  • Idliketothinkimsmart@lemmygrad.ml
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    13 days ago

    This is extremely low on the pecking order, but I like watching Minecraft survival videos & other cool mods. Im watching a recreation of WW2 edition of Minecraft, and the video creator somehow managed to force in 2 “soviets had no supplies & food” jokes into a span of like 2 minutes lol. Just let me enjoy my slop without the incessant anti-communism.

    • KrupskayaPraxis@lemmygrad.ml
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      13 days ago

      For real, I hate seeing anticommunism in videos that have nothing to do with communism. You literally can’t escape the brainrot.

    • Makan@lemmygrad.ml
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      9 days ago

      I should just play Minecraft.

      I have never once played Minecraft, to be clear.

      But honestly, I need to relax now that I can actually, well, relax now lol

      Should try looking for a group soon, ig

  • Jeanne-Paul Marat@lemmygrad.ml
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    14 days ago

    Ngl I kinda hate quantum physics. “So these balls are spinning except they’re 0 dimensional waves and not spinning and also there’s color charge and also there’s like 20 fundamental particles but half of them decay immediately, and half of the other half can stack in the same quantum state and the others can’t, also everything is waves now and all the electrons are the same because fuck you.”

    [From an engineer not specialized in electrical or computing or nuclear]

    • TabularTuxedo@lemmygrad.ml
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      13 days ago

      Quantum physics is alright. It’s just a lot of fancy linear algebra and spinors. I have a lot of problems with the culture surrounding it though.

      Like, it seems like scientists want quantum mechanics to feel magical. For example, “quantum wave collapse” is a “collapse” only in some interpretations of quantum mechanics. There was one article by 真理zhenli that talked about this mystification of physics.

      Tldr: quantum mechanics is the “shut up and calculate” of physics and a grand theory of everything ain’t gonna happen in this century.

      Edit: Found the articles: Physicalism was a Mistake; Let us Return to Materialism and A Critique of Idealist Interpretations of Quantum Theory

      • Zhemax@lemmygrad.ml
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        13 days ago

        David Bohm (who was a Communist in his early years) developed a materialistic quantum theory called the de Broglie-Bohm Mechanics or Pilot Wave Theory. It makes much more sense (and the calculations are the same) than the idealistic Copenhagen interpretation IMO.

        • Makan@lemmygrad.ml
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          13 days ago

          I’m really partial to Max Planck (especially him making the case that virtually nothing can exist in a vacuum and we can see that that is indeed the case with space, for example)

          I mean, he was a fascist, afaik, but eh, I’m going to separate some of his achievements in this case, it’s not like he did something useless like make a short story bemoaning “miscegenation” or whatever (looking at you, H.P. Lovecraft)

          Context: I still remember reading that particular story where everybody just interbreeds or whatever and it literally makes them into apes or whatever and just… laughing at it all after having finished it bwahahahahah

          (especially having grown up as “mixed” individual or whatever we call ourselves)

      • Makan@lemmygrad.ml
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        13 days ago

        A Critique of Idealist Interpretations of Quantum Theory


        Okay, now I’m dead-ass interested, ngl

        (My favorite work by Lenin is also Materialism and Imperio-criticism, which I regard to be probably his greatest work, especially if you’re interested in epistemology)

      • pcalau12i@lemmygrad.ml
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        12 days ago

        I wrote the linked articles and am finalizing a math-heavy technical book (when it goes live it will be under ISBN 978-1-291-55573-8) that critiques the doctrine of “value indefiniteness.” Value indefiniteness claims systems lack definite properties until measurement causes “collapse,” but it suffers from significant philosophical and mathematical flaws and is where all the supposed “weirdness” of quantum mechanics stems from.

        If particles “collapse” at measurement, then they do something unique in their dynamics at measurement, rendering “measurement” a fundamental part of the theory. The physicist John Bell argued that treating measurement as fundamental requires a rigorous physical definition that textbooks fail to provide, leaving it ontologically incomplete as a theory of nature. The Soviet physicist Dmitry Blokhintsev showed that collapse introduces non-linear mathematics that produces different statistical predictions than standard quantum theory, making perfect mathematical reconciliation impossible.

        Physicists call these issues the “measurement problem,” but this term is misleading because “problem” implies it is something to be solved, but the issue is unsolvable. It represents a contradiction between two incompatible premises, meaning one must be wrong. In my view, value indefiniteness is the incorrect premise. My book demonstrates via polar decomposition that the statistical evolution of quantum information is already mathematically equivalent to a stochastic process where bits have definite values at every moment. This transformation reproduces Born rule statistics without proposing a new model, as it is literally mathematically equivalent. It is the same theory just represented under a simple mathematical transformation.

        The ultimate difference between quantum and classical statistical dynamics lies in how distributions evolve. Classical statistics computes future states using only current distributions and interaction descriptions. Quantum statistics requires computing a function that additionally takes all past states back to the circuit’s beginning as input. The Harvard physicist Jacob Barandes first identified this property as “non-Markovianity” in his 2025 paper “The Stochastic-Quantum Correspondence.” Indeed, the majority of my book’s pages is dedicated to demonstrating how quantum theory, as written, decomposes mathematically into something that is both purely statistical (no quantum state or phases; they all disappear, leaving you just statistics and operators) where the statistical laws are non-Markovian.

        I then analyze major relevant papers including the PBR theorem, Bell’s theorem, the GHZ experiment, the Frauchiger-Renner paradox, and the double-slit experiment to show, mathematically, how this stochastic process explains them without presupposing value indefiniteness.

        I’ve also built a simulator you can find below, where you can construct any arbitrary quantum circuit, up to 32 qubits, and it will simulate it as a stochastic process where the bits have definite values at each moment and evolve through stochastic hops. If you change from “single” mode to “shot” mode, it will run the program many times over, forming statistics of the final bits state, and the statistics always match the Born rule, not just at the end but at every time interval.

        https://qansel.foleosoft.com/

        If you can explain quantum mechanics so simply in this way, why do people treat it as so complicated?

        My argument in the book is because this explanation does not actually give you a unique ontology, because when you do take into account the various previously mentioned papers (like Kochen-Specker and GHZ), you find that there are not inconsistencies but ambiguities in the ontology without answering 3 different questions, but the mathematical structure of quantum theory makes it physically impossible, by experiment, to discover the answers to those 3 questions.

        Rather, it only constrains to a possible class of answers to those 3 questions. Any choice within that class produces a physically plausible ontology, but they are all empirically indistinguishable from each other.

        Another user down below in the replies mentions Bohmian mechanics. Bohmian mechanics is a model within that class. Indeed, Bohm’s derivation of Bohmian mechanics begins with a polar decomposition on the quantum state, the same kind of mathematical transformation that my book relies on. It then makes specific choices to the answers to those questions which are motivated by different arguments outside of what is directly empirically verifiable.

        For example, one of the questions you have to answer is which basis should be privileged as the “ontic basis,” even though all bases are mathematically symmetrical; this is referred to as quantum contextuality and is established by the Kochen-Specker theorem. Bohmian mechanics chooses the position basis, because “position” is the most defining characteristic of a particle, as they are geometric points in space, and a point is most fundamentally defined by its position. In principle, however, you could choose a different basis, like the momentum basis, and build an alternative ontological model which is mathematically equivalent in that it makes all the same empirical predictions, and is also ontologically consistent.

        Bohmian mechanics is just one ontological model in a landscape of possible ontological models. It was, again, the physicist Dmitry Blokhintsev who pointed out that we can’t actually empirically figure out the correct model due the “finiteness of interaction” as he called it (the inherent limitations in measurement precision given by Planck’s constant) preventing us from actually probing answers to those questions.

        Physicists don’t like not knowing something. If it’s knowable, they want to do an experiment to know it. If no experiment can reveal it, many, starting with Bohr and Heisenberg, started to insist that maybe we should stop believing there is anything to be known at all. If there simply is no underlying ontology, then there is nothing to be known to begin with, and thus we can be assured we know everything that there is to know.

        This leads into the doctrine of “value indefiniteness”: there simply is no ontology underlying the quantum state, and is the basis of the famous Copenhagen interpretation. The particle just has no position at all until you look, the bits in a quantum computer have no values at all until you look.

        However, as I argue in the book, you cannot actually make this point of view compatible with realism, because it either is logically incoherent, or it is coherent, but provably deviates from the mathematical predictions of quantum theory. If we are realists who also believe quantum theory, as written, is correct, then “value indefiniteness” must be wrong.

        We thus must just accept that the mathematics of the theory does simply leave the underlying ontology underdetermined, and to actually fully specify the ontology, we must either choose a convention (fully aware it is a convention, not necessarily the “correct” ontology but useful for a given experiment), or we must make arguments that go beyond what can be empirically demonstrated: not all answers to those 3 questions are equally reasonable, some are rather absurd and arbitrary, while some you can justify by other means.

        There is simply no a priori reason to believe that the laws of physics are structured in such a way to allow humans in their tiny insignificant laboratories on this tiny pale blue dot to discover everything there is to know about the ontology of nature. It is quite easy to imagine the laws of physics being structured in such a way that simply disallows unambiguous answers to certain questions of ontology, and that is ultimately what I am to demonstrate in that book (and the article you cite is just a brief summary of the idea, which I tried to present without mathematics for the Laymen), that the structure of quantum theory fundamentally leaves 3 very important questions, needed to fully specify the ontology, not ruled out but underdetermined, so you can only restrict them to a class of possible answers rather than a singular answer.

        You then must either go beyond the pure mathematics / empirical observations themselves to restrict those 3 questions further down to a specific answer, or you must just accept that we can’t fully know the ontology and treat the ontology as something conventional. To be conventional does not mean to deny there is an underlying ontology or to resort to subjectivism; it is to choose an ontological model that is convenient given the context of your experimental setup, but with the acknowledgement that it is just a convenient choice, and thus you make no claims to certainty that it is the “true” ontological model, although it is a plausible one.

        To deny the underlying ontology leads to nonsense and cannot be meaningfully reconciled with realism, at least under the basic requirements I put forward for any sensible realist ontology in the book, one of those requirements being the “no-solipsism” requirement, which is that your model should never produce multiple incompatible mental states for other observers. That is to say, the mental states of other observers must always be invariant.

        The famous Frauchiger-Renner paradox, published in the journal Nature under the title “Quantum theory cannot consistently describe the use of itself,” demonstrates quite unambiguously that every “value indefinite” interpretation fails this simple criterion. (Again, the mathematics of which I cover in my book in more detail, when the book is released.) If you read the paper, they also point out that Bohmian mechanics (a realist model) does not run into this problem, but requires answering a question which traditional quantum theory leaves underdetermined. My book ultimately generalizes that point.

        • TabularTuxedo@lemmygrad.ml
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          11 days ago
          Outline of notes

          Left notes here because I don’t know whether I understood everything.

          Concepts

          Value indefiniteness: systems lack definite properties until measurement causes “collapse”. Suffers from philosophical and mathematical flaws.

          Problems with collapse:

          1. Assumes “measurement”, which is not rigorous (Bell, John)
          2. “Collapse” introduces non-linear math, which produces different statistical predictions than standard quantum theory (Blokhintsev, Dmitry)

          pcalau12i’s Book

          The book:

          1. Critiques value indefiniteness and shows that the ultimate difference between quantum and classical statistical dynamics lies in how distributions evolve.
          2. Demonstrates that statistical evolution of quantum information is mathematically equivalent to a stochastic process where bits have definite values at every moment
          3. Demonstrates how quantum mechanics as written decomposes mathematically into something purely statistical and where statistical laws are non-Markovian (ie: non-Stochastic)
          4. Analyzes:
            • a. PBR theorem
            • b. Bell’s theorem
            • c. GHZ experiment
            • d. Frauchiger-Renner paradox
            • e. Double slit Experiment
          5. Shows how the stochastic process of point 2 can explain the phenomena of point 4 without value indefiniteness.
          6. Presents argument that explanation in point 5 cannot provide a unique, unambiguous ontology.
            • a. There are 3 different questions which cannot be answered empirically due to the mathematical structure of quantum theory.
            • b. The mathematical structure of quantum theory can only constrain ontology to a class of answers to the 3 questions in point 6.a.
          7. Argues that you cannot assume the position that the ontology is unknowable and non-existent just because there is no unique ontology.
            • a. This point of view is
              • i. incompatible with realism
              • ii. logically incoherent, or coherent but probably a deviation from mathematical predictions of quantum mechanics
          8. Shows that assuming unknowable ontology isn’t an instance of subjectivism because:
            • i. we do not deny there is an underlying ontology
            • ii. the model never produces multiple incompatible mental states for other observers

          I didn’t know you were here on Lemmygrad. Thanks for the write-up, I really enjoyed it. This is the first time I had to take notes on a comment lol.

          I really think that Bohmian mechanics (or something similar) are the way to go to study quantum theory. Not only because of what you’ve already mentioned, but because it’s also an evolution on stochastic processes, which were literally how quantum mechanics started out (I think it was Planck who used statistical mechanics to analyse the empirical results of the black body radiation problem).

          Apologies for not having much to add because my whole quantum theory education was composed of youtube videos, reading stuff online and learning some linear algebra. However, I look foward to read your book. Do advertise it here when it’s done. Do you know how many pages it is yet?

          • pcalau12i@lemmygrad.ml
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            11 days ago

            The digital PDF is about 150 pages, so it’s not incredibly long. (Page count may be different for physical version.) It is also written so that one can follow along even if they have no technical background, although it will be harder to do so. The mathematics used are explained, with some GNU Octave code at the end of each chapter just to give you some hands-on with the math. So if you want to learn it in the process of reading it, you can, but someone who already knows the basics of quantum computing could probably skim through the whole first third of the book, with only the latter 100 pages actually assuming you know the mathematics enough to be able to simulate a quantum circuit.

            Also, as per your notes, " non-Markovian (ie: non-Stochastic)", non-Markovian does not mean non-stochastic.

            Consider that you apply a logic gate to a bit. The outcome effect on the bit will depend upon two things: (1) the definition of the logic gate, given by a truth table, and (2) the present value of the bit. You could thus imagine that the present bit’s value at time t is p[t], its future value at time t+1 is p[t+1], and the truth table is given by T[t] describing the interaction or logic gate at time t, and then you could define this transition in terms of:

            p[t+1]=f(T[t],p[t])

            i.e., some function that takes the truth table and the present state of the bit as an input, and outputs the future / altered state of the bit.

            This is the structure of a Markovian transition law. It takes what is effectively a truth table describing the effect of an interaction (represented by a matrix) as an input, as well as the present state of the system, into a function, and the function outputs the altered state of the system.

            A non-Markovian law takes a different form.

            p[t+1]=f(T[t],p[t],g(…))

            If you want to evolve p[t] to p[t+1], you additionally need a second function g(…), which is defined recursively into the past, meaning it expands out into…

            g(…)=g(T[t-1],p[t-1],g(T[t-2],p[t-2],g(T[t-3],p[t-3],g(…))

            Every layer you expand g(…) goes one time interval back into the past, until it reaches a base case where the expansion stops.

            That is to say, if you want to compute how a logic gate stochastically perturbs a bit’s value in a quantum circuit, you need a function which takes into account not just the current truth table for the current logic gate (the operator given by U) and the current statistical distribution of the bits (given by |ψ|²), but all previous ones as well, going back to the beginning of the circuit.

            Let me give an analogy. Imagine you have a machine which you pass a white ball into and sometimes outputs a red ball or a green ball. You are not sure what determines whether or not it outputs a green or red, so you study the white ball very closely, but no matter how detailed your measurements are, you cannot find anything that distinguishes one white ball from another. They all seem truly identical.

            But then, later, you discover that there seems to be a perfect correlation between whether or not the white ball comes from dispenser A or dispenser B as to whether or not the machine will transform it into a red ball or a green ball. The “cause” of the machine outputting a red or green ball seems to have no relevance to the actual details of the white ball itself, but rather, where the white ball came from in the past.

            The non-Markovian stochastic laws in quantum theory behave in a similar fashion. The statistical laws don’t just care about the current statistical state of the system, but also where it came from, meaning, they also take into account its historical evolution as well. This means the same logic gate can have different behavior if the gates preceding them in quantum circuit are different, or if the bits begin with different initial values.

            The logic gates are described by unitary operators which are complex-valued, and so they don’t directly tell you the stochastic perturbation each logic gate applies to the bits. Stochastic perturbations are described by a stochastic matrix which are real-valued, positive, and all columns must sum to 1. So, you have to somehow compute what the correct stochastic matrix is from the unitary operators.

            It’s proved in the academic literature many times over that it’s impossible to assign a single real-valued stochastic matrix to each unitary matrix that remains always positive where columns always sum to 1. The only possible way around this is to allow the assignment of different stochastic matrices to the same logic gate under different conditions. That is to say, the behavior of the same logic gate can change if the surrounding context around the logic gate changes.

            The simplest example of this is the Hadamard gate in a quantum circuit that starts in a degenerate distribution. If you apply the Hadamard gate once, it behaves like a fair coin flip. If you flip a coin twice, the first time, the outcome is a uniform distribution, and the second time, the outcome is also a uniform distribution. But for the Hadamard gate, it only gives you a uniform distribution if you apply it once. If you construct a quantum circuit consisting of two Hadamard gates, it gives you a degenerate distribution.

            There is no stochastic matrix that reproduces this behavior. You have to assign two separate stochastic matrices to the two separate instances of the two Hadamard gates: the first one moves it to a uniform distribution, [0.5 0.5; 0.5 0.5], and the second moves it to a degenerate distribution, either [1 1; 0 0] or [0 0; 1 1] depending upon whether the bit was originally initialized to 0 or 1. The book gives a general formula for computing the correct stochastic matrix for any logic gate, but the formula requires you to take in as input all previous gates and statistical distributions of the bits in the circuit up to that point.

            • TabularTuxedo@lemmygrad.ml
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              10 days ago
              more notes lol
              • Markovian
                • p[t+1] = f(T[t], p[t])
              • Non-markovian
                • p[t+1] = f(T[t], p[t], g(…))

              where:

              • T is the function that returns the truth table of a gate,
              • p is the present value of the bit
              • both are a function of time
              g(...) = g(
                  T[t-1], p[t-1], g(
                  T[t-2], p[t-2], g(
                  T[t-3], p[t-2], g(
                  ...
                  T[t-n], p[t-n], g(0)
              )))
              

              statistical distribution: |ϕ|^2

              Right, I think I understood it now. Just to be clear, this is your setup:

              1. We insert white ball into a machine
              2. Machine spits out either a blue ball or a red ball
              3. It’s not possible to whether a blue ball or a red ball will output from the machine given that we only study the white ball, since all white balls are 100% identical
              4. We then study the past of the white ball, and we discover that all white balls are dispensed from either a dispenser A and a dispenser B
              5. Despite the nonexistence of any transmission of information between a dispenser and the machine, there is a 100% correlation between the dispenser of a white ball and the color of the ball of the output (for example, the machine will always output a blue ball when a white ball comes from dispenser A, despite this white ball being identical to one which came from dispenser B)

              The ball itself doesn’t matter, its past does. Or in the case of qubits, its current value and its context.

              I don’t know if this came up when you described the non-Markovian example, but this reminded me of a Turing machine. Like, a Turing machine T can be described by f:Qi → Qj, where Qi and Qj are possible states of T. A regular Turing machine acting through time could be described by f:Q[t] → Q[t+1] and with some boundary condition Q[0]. However, in your example, this hypothetical machine X can also “read” its own past. So, X would be described as g:{Q[t], {Q[t-1], Q[t-2], Q[t-3] … Q[0]} → Q[t+1].

              I think I would understand the math of your book, but not a lot about the concepts where it’s applied. I hit a limit on my knowledge when you mentioned quantum gates and matrices on your comment. I don’t know anything about those. I’m going to read more on that both because of curiosity and because I’m reallyyyyy rusty with my math skills.

              Thanks for the write-up. I have a lot of review and studying to do. If you don’t mind me asking, do you work mostly on the theory or do you also deal with the practical reality of quantum computing?

              Also

              some GNU Octave code at the end of each chapter just to give you some hands-on with the math

              Based

              • pcalau12i@lemmygrad.ml
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                10 days ago

                do you work mostly on the theory or do you also deal with the practical reality of quantum computing?

                I don’t know anything about how to actually engineer one if that’s what you’re asking. I only know how to program them. I have run programs on some of IBM’s quantum computers, just as a way to make sure the theory really does produce the results I’d expect in reality.

    • Makan@lemmygrad.ml
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      13 days ago

      String theory is the worst.

      Not to mention the religious or woo woo crap infecting the discipline (multi-verse stuff, you know the drill)

  • pronounced ɱɐɢ @lemmygrad.ml
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    12 days ago

    Business as a school subject. I cannot express in amy way gow much I hate it. Liberal economics combined with bourgeois ideology. I have a difficult time even listening due to the sheer amount of horse shit said. Again, how the fuck do people honestly belive this?

    • TabularTuxedo@lemmygrad.ml
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      12 days ago

      I was lucky that my business classes happened in a very left-leaning school.

      One time I had a class on stocks. Of course there was the “this can make you rich!” talk, but my teacher also talked about the pandemic and stuff, like “this is why the richer get richer and the poor poorer” and “rich people like crisis”.

      But yeah, other than that, serious petit bourgeois brainworms.

      Maybe think of them like studying the enemy. It might help.

    • demeritum@lemmygrad.ml
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      10 days ago

      I had business as a high school major (or whatever the american equivalent would be), and it was the simplest math and like insurance law “put a x on answer a, b or c” stuff - which is practically non-existent in exams where I am from.