On Thursday, September 8, 2016 at 7:53:23 AM UTC-6, Bruno Marchal wrote:
>
>
> On 07 Sep 2016, at 20:06, [email protected] <javascript:> wrote:
>
>
>
> On Wednesday, September 7, 2016 at 11:16:38 AM UTC-6, Bruno Marchal wrote:
>>
>>
>> On 06 Sep 2016, at 17:42, [email protected] wrote:
>>
>>
>>
>> On Tuesday, September 6, 2016 at 4:38:53 AM UTC-6, [email protected] 
>> wrote:
>>>
>>> I understand your pov. It has but one problem. You ignore the elephant 
>>> in the room; namely, those other worlds or universes necessary for the 
>>> outcomes not measured in this world to be realized. But you have an out, 
>>> stated in another post. They form part of your imagination. Not good enough 
>>> from my pov. AG
>>>
>>
>>
>> I should also add that the MWI sheds no light, AFAICT, on the measurement 
>> problem; that is, why we get the outcome we get. As far as collapse 
>> contradicting SR via the result of Bell experiments, I am not sure about 
>> that conclusion. If FTL occurs, it may be the case that in some frames 
>> Alice's measurement occurs first, in other frames Bob's measurement occurs 
>> first. I tend to think this muddies the waters on the issue of FLT 
>> transmission and contradictions with relativity. AG
>>
>>
>>
>> The "MWI" explains already a part of the mind-body problem when 
>> formulated in the Digital Mechanist Frame. You don't need to even know QM 
>> to understand the high plausibility of the "many-computations".
>> If FTL occurs, and you keep both QM and SR, then an action in the future 
>> can change the past, and physical causility becomes meaningless. With 
>> mechanism, physical causality is not yet guarantied, to be sure, but I 
>> would throw digital mechanism if it could lead to future -> past physical 
>> action (it does not make sense).
>>
>> Ah, you wrote:
>>
>> Possible correction: my remark about relativity might apply to how events 
>> are seen from a frame moving FTL -- that is, a breakdown in causality -- 
>> and might not apply to Alice/Bob situation. AG
>>
>>
>> Well, OK, then. But it would apply if there were a collapse (in one 
>> universe), even if Alice needs to send two bits of information to 
>> transformed the effect (and send or get one qubit). 
>>
>> The "collapse" does not even refer to anything I can make sense of. It 
>> looks like a continuous invocation of God. As an explanation, it looks like 
>> a continuum of blasphemes (in the theology of the universal machine).
>>
>
> Here's what collapse means to me; the wf evolves from a solution of SWE, 
> namely a superposition, to a delta function centered at the measurement 
> value. No one knows, or has a model how this transformation occurs.It's in 
> the category of a TBD, possibly unknowable. It seems empirically based 
> since repeated measurements of the same system result in the same outcomes. 
> I don't necessarily believe in primary matter's existence. But its 
> statistical persistence seems undeniable, whereas the many worlds has yet 
> to manifest any persistence except in the minds of its advocates. AG
>
>
>
> The MWI is only the SWE taken literally. 
>

*Maybe that's the problem; taking a calculational tool too seriously. AG*
 

> If an observer O observes a cat in the superposition d + a (dead + alive), 
>

*But that never happens. The state of superposition exists, if it does, 
when the box is closed, and ceases when the box is opened. Maybe you have a 
fundamental misunderstanding of Schrodinger's Cat. AG*
 

> we know that, before interaction, the physical state is well described by 
> the expression O(a + d), with the tensor product noted multiplicatively, 
> and that it is equivalent with Oa + Od. So even at this stage the "O" can 
> be considered being in a superposition state. That is what I called the 
> linearity of the tensor product. Now, by the linearity of the wave 
> evolution we get O-a a + O-b b, that is each branch behaves classically 
> (P-i = O with i in its memory. And both 0-a and O-b can repeat their 
> measurement, and the linearity of the wave evolution implies that they will 
> always find the same measurement result. So the MWI explains the 
> persistence as much well as classical physics, or QM+collapse (if that 
> means something precise).
>
> My point is that at this stage, QM (without collapse) is compatible with 
> Mechanism (used implicitly above) only insofar as the persistence is 
> explained from a statistics on *all* computations (which exist once you 
> agree that 2+2=4 independently of you and me). 
>
> My technical point is that this work in the sense that we can derive 
> quantum logic (and normally physics) from the logical structure that the 
> computations inherit from the logic of (machine) self-reference.
>
> That is elegant because at this stage the "theory of everything" needs no 
> less and no more than very elementary axioms (and mechanism in the 
> meta-background). 
>
> The only axiom that I use are the following:
>
> 0 ≠ (x + 1)
> ((x + 1) = (y + 1))  -> x = y
> x = 0 v Ey(x = y + 1)
> x + 0 = x
> x + (y + 1) = (x + y) + 1
> x * 0 = 0
> x * (y + 1) = (x * y) + x
>
> Actually I could even just use the two combinators axioms:
>
> Kxy = x
> Sxyz = xz(yz)
>
> Such axioms are Turing complete, and you can prove the existence of the UD 
> from them (and *in* them if you add some induction axioms, but I prefer to 
> put them in the epistemology of the observers).
>
> The Turing-Church thesis rehabilit the neopythagorean theology, and we get 
> physics exactly when we use the antic definition of knowledge and matter 
> provided by them (notably by Moderatus of Gades).
>
> On the contrary, if primary matter or if physicalism would be true, we 
> remain with the task of explaining what is their role for consciousness (or 
> just first person experience). 
>
> Aristotle idea of naturalism or (weak) materialism (the existence of a 
> physical primary reality) has only been a tool for letting the mind-body 
> problem sleep a bit, and that has been a very fertile simplifying 
> hypothesis, but now, with mechanism, and plausibly with only quantum 
> mechanics, we get the (predicted by the Platonist) problem of justifying 
> the relation between first person discourse and third person discourse. We 
> can't use the simple mind-brain identity theory, because we have an 
> infinity of quasi identical brains in arithmetic, and we can't use a 
> selection principle based on a substance without damaging the mechanist 
> hypothesis.
>
> Keep in mind that my origianl goal is to solve the mind-body problem, and 
> with mechanism, we have no choice other than justifying the appearance of 
> physicalness from a statistic based on the mix of "*all* computations + 
> machine self-reference when distributed in those computations. It works 
> (till now). Non-mechanism does not work, and it is well known that the 
> mind-body problem has been put under the rug since Aristotle (except by the 
> Platonists, who were just banned from our civilisation 1500 years ago).
>
> In Soccer terms: Plato 1, Aristotle 0. I don't pretend it is the last 
> match.
>
> Bruno
>
>
>
>
> Bruno
>>
>>
>>
>>
>>> On Tuesday, September 6, 2016 at 2:23:39 AM UTC-6, Bruno Marchal wrote:
>>>>
>>>>
>>>> On 05 Sep 2016, at 19:31, [email protected] wrote:
>>>>
>>>>
>>>>
>>>> On Monday, September 5, 2016 at 8:08:12 AM UTC-6, Bruno Marchal wrote:
>>>>>
>>>>>
>>>>> On 04 Sep 2016, at 20:27, [email protected] wrote:
>>>>>
>>>>> Bruno, thank you for a detailed response. Most of it is above my pay 
>>>>> grade, but I will check some of your links and see what I can make of 
>>>>> them. 
>>>>>
>>>>>
>>>>> OK.
>>>>>
>>>>>
>>>>>
>>>>> As for the MWI, I have a simple approach. If I went to LV and played a 
>>>>> slot machine for a single trial or outcome, and someone asked me what 
>>>>> happened to the other thousands of outcomes I didn't get, I'd think that 
>>>>> would be a crazy question. 
>>>>>
>>>>>
>>>>> I mainly agree, because there is no unanimity on which counterfactual 
>>>>> or conditional non standard logic to use. 
>>>>>
>>>>
>>>> *Isn't it really much simpler? Just because something *could* exist, 
>>>> like those thousands of other outcomes of the slot machine, doesn't mean 
>>>> they *must* exist. The MWI insists all outcomes MUST exist. I see no 
>>>> necessity for that. AG *
>>>>
>>>>
>>>> You need it to get the interference between the terms of the wave. I 
>>>> agree with Deutsch: QM is the science of multiple interfering histories. 
>>>> The collapse is an addition to avoid that multiplication/differentiation 
>>>> consequence.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> But that's the question some physicists ask when they are confronted 
>>>>> with the non-linearity of collapse in the Copenhagen Interpretation. 
>>>>>
>>>>>
>>>>> I tend to disagree here. The quantum situation is different because 
>>>>> with quantum mechanics, different outcomes can interfere and thus have 
>>>>> some 
>>>>> physical underpinning which is hard to avoid, especially without assuming 
>>>>> the collapse of the wave.
>>>>>
>>>>
>>>> *How can you disagree?  Many prominent physicists -- Greene, Deutsch, 
>>>> Carroll -- when confronted with the non-linearity of collapse, believe the 
>>>> MWI avoids or solves this problem. AG*
>>>>
>>>>
>>>> ?
>>>> I agree with them. MWI entails no-collapse, and the evolution is purely 
>>>> linear. Just a "rotation" in the Hilbert space.
>>>>
>>>>
>>>>
>>>>> Accepting non linearity 
>>>>>
>>>>>
>>>>> There are work by Steinberg and Plaga which shows that if the QM wave 
>>>>> is slightly non linear, then we get the WW with a revenge: interactions 
>>>>> becomes possible in between terms of the wave. This makes wrong special 
>>>>> relativity, but also thermodynamics, etc. 
>>>>>
>>>>
>>>> *The wf before measurement is linear insofar as it satisfies a linear 
>>>> DE, and relativity is well tested. So I don't see any issue here. AG *
>>>>
>>>>
>>>> OK, but then there is no collapse. We agree, then, only the collapse 
>>>> leads to non-linearity.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>> So I guess you mean that there is a (non linear) collapse, and that, 
>>>>> strictly speaking the SWR is false. 
>>>>>
>>>>
>>>> SWR = ? 
>>>>
>>>> *Why does a non-linear collapse falsify SR? AG*
>>>>
>>>>
>>>>
>>>> By Bell's violation, if there is a collapse, it affects elements which 
>>>> are space-separated. Einstein explained this already at the Solvay 
>>>> congress.
>>>>
>>>>
>>>>
>>>>  
>>>>
>>>>> You introduce a duality between observer and observed, or between 
>>>>> macro and micro-physics. And, you assume non-mechanism in cognitive 
>>>>> science.
>>>>>
>>>>
>>>>  H*ow can we test our models without the duality of observer and 
>>>> observed? You demand the impossible. *
>>>>
>>>>
>>>> Read the book by Hans Primas on the foundation of chemistery. It 
>>>> explains well why Everett restores monism in the philosophy of mind (but 
>>>> he 
>>>> missed this happens directly with Mechanism).
>>>>
>>>>
>>>>
>>>>
>>>> *What "non mechanism" have I assumed? QM just gives us probabilities. 
>>>> It's not a causal theory. AG*
>>>>
>>>>
>>>> With the collapse.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>  
>>>>
>>>>> That is  lot of things for which we don't have evidence. Cosmologists 
>>>>> applies QM on very big object, like black holes, if not the entire 
>>>>> universe, and people trying to justify a physical collapse get a lot of 
>>>>> problem, like non-locality, to cite the one Einstein disliked the most, 
>>>>> and 
>>>>> I share a bit that opinion.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> and actual time irreversibility (not FAPP) is an easier concept to 
>>>>> accept than the real or fictional other worlds necessary to support the 
>>>>> MWI. 
>>>>>
>>>>>
>>>>> Well, with mechanism, in all case (with or without QM) we get the many 
>>>>> histories/dreams/computations, and they exist like natural numbers. We 
>>>>> don't have to take the "worlds" as primitive ontological reality. I tend 
>>>>> to 
>>>>> not really believe in *any* world. Those belongs to the imagination of 
>>>>> the 
>>>>> relative universal numbers, whose proof of existence can already be done 
>>>>> in 
>>>>> elementary arithmetic.
>>>>>
>>>>
>>>> *Physics is about constructing and testing models of physical reality, 
>>>> not about dreams. *
>>>>
>>>>
>>>> Assuming there is a physical reality per se, but with Mechanism, the 
>>>> physical reality is "only" a persistent statisticl illusion emerging from 
>>>> all computational histories.
>>>>
>>>>
>>>>
>>>>
>>>> *You can call the MWI a dream, but for me it's a nightmare. LOL. AG *
>>>>
>>>>>
>>>>> BTW, the time irreversibility is not FAPP since the collapsed wf, when 
>>>>> inserted back into the SWE, recovers only itself exactly at an earlier 
>>>>> time, but not the original wf which collapsed. AG
>>>>>
>>>>>
>>>>> Yes, OK. If there is such a collapse, but I don't see evidence.
>>>>>
>>>>
>>>> *If you measure a system repeatedly, you get the same measurement. 
>>>> That's the evidence for collapse; *
>>>>
>>>>
>>>>
>>>> Not at all. That is what Everett explains in all details. You don't 
>>>> need the collapse to explain, using only the SWE that in each branch the 
>>>> observer feel like there has been a collapse, using only a notion similar 
>>>> to the First Person Indeterminacy that we have anyway in arithmetic.
>>>>
>>>>
>>>>
>>>> *that the system remains in the same eigenstate after measurement, not 
>>>> in the original superposition. AG*
>>>>
>>>>
>>>> Yes, with a collapse which is not explained, nor even well defined, and 
>>>> which contradicts the SWE.
>>>> Computationalism and QM without collapse leads to immaterial monism, 
>>>> which is nice as we don't have any evidence for primary matter.
>>>>
>>>> Bruno
>>>>
>>>>
>>>>
>>>>
>>>>  
>>>>
>>>>> I think it is human coquetry (grin). Nature loves to do things in many 
>>>>> exemplars, and elementary arithmetic loves that to. Personal uniqueness 
>>>>> is 
>>>>> an illusion (provably so in the mechanist theory of mind). The evidences 
>>>>> are more on the side of reversibility, and unitary evolution. But of 
>>>>> course 
>>>>> that might be false, and is still an open problem in the computationalist 
>>>>> theory. But there too, we already got some evidence for linearity and a 
>>>>> core symmetrical physical structure.
>>>>>
>>>>> Bruno
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Sunday, September 4, 2016 at 8:16:48 AM UTC-6, Bruno Marchal wrote:
>>>>>>
>>>>>>
>>>>>> On 03 Sep 2016, at 21:02, [email protected] wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Friday, September 2, 2016 at 11:52:55 AM UTC-6, Alan Grayson wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Fri, Sep 2, 2016 at 11:27 AM, <[email protected]> wrote:
>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Friday, September 2, 2016 at 11:07:09 AM UTC-6, Bruno Marchal 
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>>
>>>>>>>>> On 31 Aug 2016, at 20:30, [email protected] wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Wednesday, August 31, 2016 at 11:17:22 AM UTC-6, Bruno Marchal 
>>>>>>>>> wrote:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On 30 Aug 2016, at 18:23, Alan Grayson wrote:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On Friday, June 10, 2016 at 6:10:41 PM UTC-6, Bruce wrote:
>>>>>>>>>>>
>>>>>>>>>>> On 11/06/2016 3:56 am, Bruno Marchal wrote: 
>>>>>>>>>>> > On 10 Jun 2016, at 03:02, Bruce Kellett wrote: 
>>>>>>>>>>> >> On 10/06/2016 1:41 am, Bruno Marchal wrote: 
>>>>>>>>>>> >>> On 09 Jun 2016, at 01:28, Bruce Kellett wrote: 
>>>>>>>>>>> >>>> In other words, FPI is just the statement that Alice and 
>>>>>>>>>>> Bob have 
>>>>>>>>>>> >>>> to look to find out which of the (+,+'), (+,-'), (-,+'), or 
>>>>>>>>>>> (-,-') 
>>>>>>>>>>> >>>> worlds they are in. I don't think that actually adds 
>>>>>>>>>>> anything 
>>>>>>>>>>> >>>> significant to the discussion. 
>>>>>>>>>>> >>> 
>>>>>>>>>>> >>> That eliminates the physical spooky action at a distance 
>>>>>>>>>>> which are 
>>>>>>>>>>> >>> necessarily there in QM+collapse. 
>>>>>>>>>>> >> 
>>>>>>>>>>> >> You have yet to prove that -- assertion is not proof. 
>>>>>>>>>>> > 
>>>>>>>>>>> > By defining world by "closed for interaction", locality 
>>>>>>>>>>> follows from 
>>>>>>>>>>> > linearity. 
>>>>>>>>>>>
>>>>>>>>>>> Bruno, you specialize in these oracular pronouncements that mean 
>>>>>>>>>>> absolutely nothing.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> This is just insulting, and add nothing but confusion.
>>>>>>>>>>
>>>>>>>>>> Avoid ad hominem patronizing tone and focus on what you do not 
>>>>>>>>>> understand or disagree with.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> "locality follows from linearity" -- what a load of 
>>>>>>>>>>> total nonsense. 
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> OK, I was quick there, but I provided more details in *many* 
>>>>>>>>>> other posts. Please read most of a thread, not just a a sentence 
>>>>>>>>>> here and 
>>>>>>>>>> there and then adding to the prejudices.
>>>>>>>>>>
>>>>>>>>>> To be slightly less short, and explain, I was talking in the 
>>>>>>>>>> frame of the non collapse formulation of QM, and I was just saying 
>>>>>>>>>> that 
>>>>>>>>>> without any collapse, the linearity of the tensor product with the 
>>>>>>>>>> linearity of the SWE ensure that at any time everything is local, 
>>>>>>>>>> even 
>>>>>>>>>> computable, in the global third person picture.
>>>>>>>>>>
>>>>>>>>>> Basically, "physical non locality" needs to put some amount of 3p 
>>>>>>>>>> sense in the collapse of the wave, where in the MWI (and in 
>>>>>>>>>> arithmetic) the 
>>>>>>>>>> indeterminacies and the non local appearances are purely epistemic 
>>>>>>>>>> (first 
>>>>>>>>>> person or first person plural). 
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>> > There are 1p statistical interference, but Bell's inequality 
>>>>>>>>>>> violation 
>>>>>>>>>>> > is accounted without FTL, which is not the case with collapse, 
>>>>>>>>>>> or 
>>>>>>>>>>> > Bohmian particules. 
>>>>>>>>>>> > I gave the proof with others, and eventually you admitted that 
>>>>>>>>>>> there 
>>>>>>>>>>> > was no real action at a distance. But with one world, those 
>>>>>>>>>>> are real 
>>>>>>>>>>> > action at a distance. So I think the point has been made. 
>>>>>>>>>>>
>>>>>>>>>>> There is no FTL mechanism in action in one world or many: Bell 
>>>>>>>>>>> non-locality obeys the no-signalling theorem. You have to get 
>>>>>>>>>>> over 
>>>>>>>>>>> thinking that non-locality means FTL action. 
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Here's an article of interest. FWIW, I don't believe the 
>>>>>>>>>> no-signalling theorem puts this issue
>>>>>>>>>> to rest. AG
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> In all the thread we (me and Bruce) were agreeing with this,   
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> I haven't read every post in this thread, but from Bruce's remark 
>>>>>>>>> above, he apparently believes that you believe in FTL transmission of 
>>>>>>>>> information, and that since the no-signal theorem denies that, your 
>>>>>>>>> claim 
>>>>>>>>> (or any claim of FTL transmission) is falsified.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Guess what, you were completely wrong.
>>>>>>>>>
>>>>>>>>> I was the one who denies the FTL. 
>>>>>>>>>
>>>>>>>>  
>>>>>>>> *My text may have confused you. I thought you went to the MWI to 
>>>>>>>> deny FTL in this one-world. That's what I meant. But Bruce seems to 
>>>>>>>> deny 
>>>>>>>> FTL in this world, by saying the phenomenon is just a property of the 
>>>>>>>> wf, 
>>>>>>>> and in his appeal to the no-signalling theorem; as if to say, if you 
>>>>>>>> can't 
>>>>>>>> send information, there can't be FTL. But here "send information" in 
>>>>>>>> the 
>>>>>>>> context of no-signalling theorem just means you can't send a message 
>>>>>>>> of 
>>>>>>>> choice. AG *
>>>>>>>>
>>>>>>>> *What does FPI stand for? TIA, AG*
>>>>>>>>
>>>>>>>>>
>>>>>>>>> The article I posted denies that the apparent contradiction 
>>>>>>>>> between relativity and non locality can be resolved simply by 
>>>>>>>>> appealing to 
>>>>>>>>> the non-signalling theorem, which Bruce seems to assert. 
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> I was the one asserting that with the MWI, even the Bell's 
>>>>>>>>> violation does not force FTL, even without signalling possible.
>>>>>>>>>
>>>>>>>>> My point, shared by others in the thread,  was that with the MWI 
>>>>>>>>> restores both 3p determinacy, and 3p locality. The point of Clark and 
>>>>>>>>> Bruce 
>>>>>>>>> is that even with the MWI, Bell's inequality violation proves that 
>>>>>>>>> nature 
>>>>>>>>> is 3p non local, and that action at a distance exists.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> I can only go by his words. So I don't see that the article I 
>>>>>>>>> posted is irrelevant to the discussion. AG  
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> It was Bruce who claims that Bell's inequality violation shows 
>>>>>>>>> that FTL exists, even without possible signalling.
>>>>>>>>>
>>>>>>>>
>>>>>>>> *Then why does he tell you to "get over it", it being FTL? AG*
>>>>>>>>
>>>>>>>
>>>>>>> *Maybe he means that FTL exists in this world, so why resort to the 
>>>>>>> MWI to deny it. But then why does he bring up the no-signalling 
>>>>>>> theorem? 
>>>>>>> AG *
>>>>>>>
>>>>>>
>>>>>> *Hope I didn't offend any true believers in the MWI, *
>>>>>>
>>>>>>
>>>>>> MWI is a theory. I have often explain, as a logician, that MWI is not 
>>>>>> an interpretation but a different theory than Copenhagen. MWI  = 
>>>>>> wave-function postulate. Copenhagen-QM = wave function postulate + 
>>>>>> collapse 
>>>>>> postulate. Of course both have some problem of interpretation (like all 
>>>>>> theories). I tend to not accept the notion of "physical world", and 
>>>>>> working 
>>>>>> in arithmetic I use only the notion of computation. Indeed, my result is 
>>>>>> that both the collapse of the wave and the wave itself are universal 
>>>>>> number's First Person phenomenologies, when we assume a form of 
>>>>>> Mechanist 
>>>>>> Hypothesis in cognitive science. Mechanism makes physicalism wrong.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> *but in extensive discussions about this on another MB, none of the 
>>>>>> true believers could give a coherent account of these other worlds; for 
>>>>>> example, where the energy comes from, *
>>>>>>
>>>>>>
>>>>>> Energy is a "one-world" notion, but anyway, I don't believe in 
>>>>>> worlds, at least not until someone explains what they mean. For me, it 
>>>>>> is a 
>>>>>> convenient fiction. With Mechanism, a world is an extrapolation made by 
>>>>>> numbers sharing sheaves of computation verifying some measure weight, 
>>>>>> and 
>>>>>> such measure weighting must be explained through the logic of 
>>>>>> self-reference. You might take a look at my papers, like this one:
>>>>>>
>>>>>>
>>>>>> http://iridia.ulb.ac.be/~marchal/publications/SANE2004MARCHALAbstract.html
>>>>>>
>>>>>> Or this one, if you can access it:
>>>>>>
>>>>>>  http://dx.doi.org/10.1016/j.pbiomolbio.2013.03.014
>>>>>>
>>>>>> *and whether an observer in this world is reproduced in other worlds, 
>>>>>> and if so, with what memories. The MWI seems like a desperate attempt to 
>>>>>> avoid non-locality and/or non-linearity of QM. AG *
>>>>>>
>>>>>>
>>>>>> Well, it avois the non linearity of the collapse, and its dualism. 
>>>>>> OK.  But the "other worlds" are only a consequence of the contagion of 
>>>>>> the 
>>>>>> superposition of the particle (say) to the observer. If you look at a 
>>>>>> cat 
>>>>>> in the dead+alive state, you end yourself looking at a dead cat + 
>>>>>> looking 
>>>>>> at a alive cat. The given brain states are orthogonal and do not 
>>>>>> interact, 
>>>>>> but can still interfere statistically. This list is for people believing 
>>>>>> that "everything" is a simpler conceptual notion than any particular 
>>>>>> thing, 
>>>>>> and so welcome both the MWI in quantum physics, and the 
>>>>>> "many-computations" 
>>>>>> in arithmetic, that we get from Mechanism. I predicted the *appearance* 
>>>>>> of 
>>>>>> "many-worlds" before knowing about quantum physics measurement problem. 
>>>>>>
>>>>>> About Bruce's points, maybe you should ask Bruce, as the cited post 
>>>>>> is a bit out of the context of the thread.
>>>>>>
>>>>>> You asked in another post what is the FPI. 
>>>>>> It is an acronym for First Person Indeterminacy, and it is the 
>>>>>> subjective indeterminacy that you get in the (classical) 
>>>>>> self-duplication. 
>>>>>> Again, look at the paper sane04 cited above, where this is made precise 
>>>>>> and 
>>>>>> explained. The FPI is the building brick of the argument showing that 
>>>>>> Mechanism and Physicalism are incompatible, and that physics is 
>>>>>> conceptually reduced to arithmetic when we assume mechanism. I show that 
>>>>>> this leads to testable consequences, and some are tested retrospectively 
>>>>>> with QM.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>  
>>>>>>>>
>>>>>>>>> I agree that FTL (fast than light influence which not necessarily 
>>>>>>>>> exploitable for transmission of information) still exist, and I agree 
>>>>>>>>> that 
>>>>>>>>> it is logically possible, but people believing in that have the 
>>>>>>>>> obligation 
>>>>>>>>> to give evidence, and my point is that in the MWI, Bell's violation 
>>>>>>>>> is no 
>>>>>>>>> more an evidence, as Bell supposes definite outcomes in definite 
>>>>>>>>> realties, 
>>>>>>>>> which makes no sense in the MWI, nor in computationalism more 
>>>>>>>>> generally.
>>>>>>>>>
>>>>>>>>
>>>>>>>> *I tend to agree that Bell's results assume one world. AG *
>>>>>>>>
>>>>>>>
>>>>>>
>>>>>> Good. I think some people disagree with this on this list, but I will 
>>>>>> let them to defend their point again, or not.
>>>>>>
>>>>>> Bruno
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>>>> Bruno
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> The question was specifically about some possible remnant of 
>>>>>>>>>> physical action at a distance in the MWI. We both know that the non 
>>>>>>>>>> signaling does not put light on this. Genuine physical action at a 
>>>>>>>>>> distance 
>>>>>>>>>> obviously exist in the QM-with-collapse, by Bell's inequality 
>>>>>>>>>> violation, 
>>>>>>>>>> but Bell's argument does not show action at a distance( in any 
>>>>>>>>>> unique 
>>>>>>>>>> branch if that exist), in the MWI. 
>>>>>>>>>>
>>>>>>>>>> What we have is the contagion of superposition, and they never go 
>>>>>>>>>> quicker than interaction, that is at sub-speed of light.
>>>>>>>>>>
>>>>>>>>>> And that is why we can define, or represent the "world" by set of 
>>>>>>>>>> space-time events closed for interaction.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>  http://people.uleth.ca/~kent.peacock/FQXi_v2.pdf
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Interesting (but out of  topic indeed).
>>>>>>>>>>
>>>>>>>>>> Bruno
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>> >>> That adds nothing, indeed. That shows only that the 
>>>>>>>>>>> paradoxes came 
>>>>>>>>>>> >>> only from the axioms some have added to fit their 
>>>>>>>>>>> philosophical 
>>>>>>>>>>> >>> prejudices. 
>>>>>>>>>>> >> 
>>>>>>>>>>> >> So you add axioms to suit your philosophical prejudices just 
>>>>>>>>>>> as 
>>>>>>>>>>> >> others do -- how does that make your position any better than 
>>>>>>>>>>> that of 
>>>>>>>>>>> >> others? 
>>>>>>>>>>> > 
>>>>>>>>>>> > No. I subtract axioms. 
>>>>>>>>>>> > 
>>>>>>>>>>> > Bohr's axioms: SWE + COLLAPSE + number (add,mult)      (+ 
>>>>>>>>>>> > unintelligible theory of mind) 
>>>>>>>>>>> > 
>>>>>>>>>>> > Everett's axioms SWE + Number (add,mult).       (+ mechanist 
>>>>>>>>>>> theory of 
>>>>>>>>>>> > mind) 
>>>>>>>>>>> > 
>>>>>>>>>>> > Your servitor's axioms: Number(add,mult).        (+ mechanist 
>>>>>>>>>>> theory 
>>>>>>>>>>> > of mind) 
>>>>>>>>>>> > 
>>>>>>>>>>> > And I don't pretend that is true, only that digital
>>>>>>>>>>
>>>>>>>>>>

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