gill1109 wrote:I had long, long ago made perfect sense, to my own satisfaction, of Joy Christian's mathematics. I felt I had got to understand his way of thinking very well, and I think I know exactly how it led him astray. But so what? My criticisms are well documented. Joy believes he has refuted them all. I doubt any symposium is going to change my thinking on this, nor Joy's thinking.

gill1109 wrote:Gordon Watson wrote:Richard,
1. Your interpretation of [via additions to] the sentence that introduces Bell 1964:(1) makes no sense to me: it makes good sense as Bell has written. Further, I'm not aware of any other Bellian making your strange call: so I conclude that the sentence makes good sense to many others!
2. You say: "Your [ie, my, GW's] equation [2] comes out of the blue. Nobody is assuming that."
I trust you understood that it was a short-form representation of:[sic]!
Which is eqn (10) in Bell's "La nouvelle cuisine".
It is known to Bellians as "Bell locality" :- some Bellians, agreeing with me, admit that is false; which it clearly is, both theoretically and experimentally and under QM.
See, for example, Norsen, eqn (18): https://arxiv.org/pdf/quant-ph/0408105.pdf
3. Richard, this all leaves my half-page of elementary algebra untouched.
Please, start with my eqn (1) and follow the elementary math.
For, seriously, if you cannot make sense of my half-page, there is little hope that you'll make sense of Joy Christian's math in the coming symposium.
Thanks; Gordon
Gordon
1. I don't speak for anybody else. I'm not trying to change Bell, I'm trying to make his intention, which is obvious to me but not to you, more explicit. He is using counterfactual reasoning; and he is building on the working assumptions which he had previously made. Those assumptions were provisional. His intention is to show that they must be false. It's called arguing by contradiction. I have noticed that a lot of people have difficulties with arguing by contradiction.
Counterfactual reasoning has moreover been the subject of great controversy in philosophy; but also many ordinary people have gut-feeling objections to counterfactual reasoning. However it is the basis of Law, and the basis of Morality, and can be cogently argued to be the basis of Science, and you could say, the basis of History. Does History merely recount what did happen, or is it an attempt to explain *why* certain things happened? In counterfactual reasoning we always use "were" not "is". If Napoleon had been a woman then he would never have tried to invade Russia.
I recommend Pearl's book. It has created quite a revolution in many fields. Nowadays the limitations but also the power and the necessity of counterfactual reasoning are widely accepted.
You think you have proven that Bell is wrong. I think you have completely misunderstood Bell. You think Bell's sentence makes good sense as it stands. I can tell you that you have not understood Bell's sentence, because if you had understood him properly, you wouldn't have arrived at your conclusions.
2. I did not understand what your [2] was short-hand for. I understand the long form of [2] which you give now. It's obviously, physically, a much too strong assumption. It combines two different (conditional) independence assumptions, which the philosophers of science have got fancy names for. Parameter independence and something else. If you want to call it Bell locality, feel free. It is mathematically equivalent to assumptions that would appear at first sight to be much weaker, and much more physically reasonable. Such mathematical equivalences are nowadays all part of the standard theory of causality as set out in Pearl, Peters et al, etc. They go back to Fine's papers of 1980 or thereabouts, in which it is shown that the set of all CHSH inequalities together are in a certain sense necessary and sufficient conditions for existence of a LHV model. Note: existence of a LHV model! Not existence of LHV's
3. I had long, long ago made perfect sense, to my own satisfaction, of Joy Christian's mathematics. I felt I had got to understand his way of thinking very well, and I think I know exactly how it led him astray. But so what? My criticisms are well documented. Joy believes he has refuted them all. I doubt any symposium is going to change my thinking on this, nor Joy's thinking. That is not the point.
I think Joy should aim at convincing others. The point of the symposium is to give Joy a podium on which to do so. I offered him this symposium in order to atone, as far as I can, for the anguish I caused him in the past. I should not have pursued him, like I did, to all far corners of the internet! It was an unhealthy obsession on my part, and it caused harm to Joy and to others, which I'm deeply sorry for.
gill1109 wrote:Gordon, I have earlier tried hard to convince you of the naivety and the hopeless lack of transparency of your arguments. I respect your opinion but I don't see any point in trying to convince you that you are wrong. You are at least as obstinate as me, if not more so.
Come by some time and drink some beer with me, at a blackboard. Or single malt. Or: why don't you rise to *my* challenge and write some computer programs which definitely prove you are right and moreover which will win you the Nobel prize? Classical computers are classical physical objects so that would be worth the Nobel prize. My 10 000 Euro says you can't.
Similarly, I like and respect Joy, but there is no point in my trying to convince him that he's wrong. Here I have to yield to his superior obstinacy. I should have given up my hopeless quest, for the greater benefit of the human race, to get him to see reason, long, long ago.
Over the years, Bell's arguments became more refined, less ambiguous, and more powerful. His language also became both more precise and more subtle at the same time ... as the complexity of the matter actually does demand. It demands very careful mathematical thinking and very careful distinction between on the one hand, physical reality, and on the other hand, mathematical reality - mathematical models which are supposed to mirror certain aspects of reality. Physicists and engineers are not well qualified for this task.
Gordon Watson wrote:Please: just refute my elementary algebra!
gill1109 wrote:Similarly, I like and respect Joy, but there is no point in my trying to convince him that he's wrong. Here I have to yield to his superior obstinacy. I should have given up my hopeless quest, for the greater benefit of the human race, to get him to see reason, long, long ago.
Joy Christian wrote:gill1109 wrote:Similarly, I like and respect Joy, but there is no point in my trying to convince him that he's wrong. Here I have to yield to his superior obstinacy. I should have given up my hopeless quest, for the greater benefit of the human race, to get him to see reason, long, long ago.
I don't really care what the Tweedledum or Tweedledee thinks of me or my work on the quantum correlations.![]()
***
Gordon Watson wrote:1. Bell (1964:195) sets out a clear intention: to provide a "more complete specification" of the EPRB experiment.
Mikko wrote:Gordon Watson wrote:1. Bell (1964:195) sets out a clear intention: to provide a "more complete specification" of the EPRB experiment.
What makes you think so? In Bell's 1964 article there is no statement of intention nor any other support for this claim.
Gordon Watson wrote:Mikko wrote:Gordon Watson wrote:1. Bell (1964:195) sets out a clear intention: to provide a "more complete specification" of the EPRB experiment.
What makes you think so? In Bell's 1964 article there is no statement of intention nor any other support for this claim.
Here's what makes me know so:1. Bell (1964:195) sets out a clear intention: "Let this more complete specification be effected by means of parameters λ."
Gordon Watson wrote:Mikko wrote:Gordon Watson wrote:1. Bell (1964:195) sets out a clear intention: to provide a "more complete specification" of the EPRB experiment.
What makes you think so? In Bell's 1964 article there is no statement of intention nor any other support for this claim.
Here's what makes me know so:1. Bell (1964:195) sets out a clear intention: "Let this more complete specification be effected by means of parameters λ."
Then due to his early error, the whole of his essay -- indeed, via the self-confessed dilemma [which you seem to overlook?], the rest of his life -- is consumed by his inability to deliver.
gill1109 wrote:The mistake in your algebra is that you think that your (9) is not justified. Which you say is Bell’s famous 1964:(15). You think that Bell here needs what you call "SIR" (single instant realisation?) and I've explained that he doesn't need SIR "in reality (i.e. as a physical assumption)". His more realistic assumptions in his much later works allow him to assume without loss of generality that SIR *can* hold in *a mathematical model which reproduces the same predictions*.
jreed wrote:Gordon,
I looked through your paper, and in equation (8), which is from a quantum mechanical calculation, you come up with some expectations for E(a,b)..., then plug these into Bell's formula, and guess what - Bell's inequality is violated. Isn't that the result you would expect?
gill1109 wrote:Gordon Watson wrote:Mikko wrote:Gordon Watson wrote:1. Bell (1964:195) sets out a clear intention: to provide a "more complete specification" of the EPRB experiment.
What makes you think so? In Bell's 1964 article there is no statement of intention nor any other support for this claim.
Here's what makes me know so:1. Bell (1964:195) sets out a clear intention: "Let this more complete specification be effected by means of parameters λ."
Then due to his early error, the whole of his essay -- indeed, via the self-confessed dilemma [which you seem to overlook?], the rest of his life -- is consumed by his inability to deliver.
Mikko tells it exactly as it is. Brevity is the soul of wit.
Gordon, permit me to just repeat *my* analysis of where I believe you are wrong, which you are ignoring too. It's a bit longer but still fairly short. I can do longer versions too, if you would like me to.gill1109 wrote:The mistake in your algebra is that you think that your (9) is not justified. Which you say is Bell’s famous 1964:(15). You think that Bell here needs what you call "SIR" (single instant realisation?) and I've explained that he doesn't need SIR "in reality (i.e. as a physical assumption)". His more realistic assumptions in his much later works allow him to assume without loss of generality that SIR *can* hold in *a mathematical model which reproduces the same predictions*.
I've explained what we could do to resolve a breakdown in communication. Permit me, please, to repeat some options:
1) We could stand together at a blackboard with a beer and go through some basic ideas from probability theory and from causality theory. I want to teach you about the mathematical (probability theory) concept called "coupling" and I need to show you how one can and does frequently draw conclusions about "counterfactual experiments" (what would have happened if ...) from experimental data from the experiments which can be done. Of course, one needs to make assumptions about reality, in order to do this. Bell gives his arguments, just a refinement of EPR's, and over the years they have been improved and sharpened, first by Bell and later by other people in quantum information. Interestingly, there has been a parallel development by computer scientists and people working in AI, machine learning, and data science, as well as by epidemiologists and biostatisticians and medical statisticians, as well as by econometrists and economists, leading to standard works like that of Pearle and like that of Peters et al. An army of imitators and popularisers is hard at work, too. This is going to be the foundation of AI for many decennia to come.
2) You could rise to one of my computer challenges or to Sasha Vongehr's quantum Randi challenge, put on your overalls, and write some computer programs which will *prove* beyond a shadow of doubt that you are right. You can even try to interest some young ambitious computer minded person to do the programming for you.
3) You could try hard to understand the, on the whole fairly elementary, math in some of my papers, and you can try to tell me where I am making a mistake. You couldn't make any sense of Bell. Take a look at that of another "Bell supporter" then. I think Tim Maudlin's book is a masterpiece, which has influenced now several generations of philosophers and historians of science.
gill1109 wrote:The mistake in your algebra is that you think that your (9) is not justified. Which you say is Bell’s famous 1964:(15). You think that Bell here needs what you call "SIR" (single instant realisation?) and I've explained that he doesn't need SIR "in reality (i.e. as a physical assumption)". His more realistic assumptions in his much later works allow him to assume without loss of generality that SIR *can* hold in *a mathematical model which reproduces the same predictions*.
Gordon Watson wrote:1. I'm happy to include you in Maudlin's and Norsen's class.
2.gill1109 wrote:The mistake in your algebra is that you think that your (9) is not justified. Which you say is Bell’s famous 1964:(15). You think that Bell here needs what you call "SIR" (single instant realisation?) and I've explained that he doesn't need SIR "in reality (i.e. as a physical assumption)". His more realistic assumptions in his much later works allow him to assume without loss of generality that SIR *can* hold in *a mathematical model which reproduces the same predictions*.
BUT what you call "Bell's more realistic assumptions" led him to his formulation of "Bell locality." Which you reject!?
3. Indeed, why did he bother with *a mathematical model which reproduces the same [DEFECTIVE, non-EPRB] predictions* when his AIM was to model EPRB!?
4. So, please, when you reply to my earlier question on that matter -- and perhaps more in keeping with you recent psycho-analytic writings [no offence meant]:
WHY did Bell or his associates (even you) not resolve -- so easily [and presumably without any loss of integrity] -- his self-confessed DILEMMA in the way that you propose!?
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