On Wednesday, December 4, 2019 at 4:43:35 PM UTC-6, Bruce wrote: > > On Wed, Dec 4, 2019 at 10:48 PM Bruno Marchal <[email protected] > <javascript:>> wrote: > >> On 11 Nov 2019, at 12:45, Bruce Kellett <[email protected] <javascript:>> >> wrote: >> >> On Mon, Nov 11, 2019 at 8:18 PM Bruno Marchal <[email protected] >> <javascript:>> wrote: >> >>> >>> That is the whole point of realism. To believe in things despite we can >>> not access to them. The belief that reality is bigger than the reality we >>> can personally observe. >>> >> >> That is not scientific realism -- that is metaphysical mysticism. >> >> >> Hmm… You *can* say that, but then you need to assess that your invocation >> of physical brain is such metaphysical mysticism. The point is that this >> version of metaphysical mysticism is incompatible with the mechanist >> assumption. >> > > It is not a metaphysical to believe in the existence of a physical brain > underlying our conscious minds -- it is the result of solid scientific > evidence. If it is incompatible with the mechanist assumption, then that is > because the mechanist assumption is useless rubbish. > > > > Evolution has precisely nothing to do with it. The preferred basis is >> determined by quantum Darwinism >> >> >> You can’t invoke quantum mechanics when using Mechanism, unless you >> explain why the quantum formalism emerges from the statistics on all >> computations (realised in arithmetic) seen from inside (a notion handled by >> the self-referential logic, but some thought experience can give the main >> ideas without delving too much in the provability logics). >> > > > I can invoke quantum mechanics when doing physics. The trouble with your > rubric "the quantum formalism emerges from the statistics on all > computations seen from the inside..." is that is precisely meaningless. You > have never given any indication of what "The statistics on all > computations" might mean. How do you select "all computations", and what > "statistics" do you use on them? And what might that give you, if anything? > > Your grand promises have never actually delivered anything, Bruno. You > seem to think that you can lay down the law about quantum mechanics, but > you have no idea how to get even the Schroedinger equation from your > "statistics over computations". Until you can actually produce something > that even vaguely approaches an account of the physical world we see around > us, you can be safely ignored. > > Bruce >
Something close: *The universal path integral supports a quantum theory of the universe in which the world that we see around us arises out of the interference between all computable structures.* The universal path integral Seth Lloyd <https://arxiv.org/search/quant-ph?searchtype=author&query=Lloyd%2C+S>, Olaf Dreyer <https://arxiv.org/search/quant-ph?searchtype=author&query=Dreyer%2C+O> (Submitted on 12 Feb 2013) Path integrals represent a powerful route to quantization: they calculate probabilities by summing over classical configurations of variables such as fields, assigning each configuration a phase equal to the action of that configuration. This paper defines a universal path integral, which sums over all computable structures. This path integral contains as sub-integrals all possible computable path integrals, including those of field theory, the standard model of elementary particles, discrete models of quantum gravity, string theory, etc. The universal path integral possesses a well-defined measure that guarantees its finiteness, together with a method for extracting probabilities for observable quantities. The universal path integral supports a quantum theory of the universe in which the world that we see around us arises out of the interference between all computable structures. Comments: 10 pages, plain TeX Subjects: Quantum Physics (quant-ph) Cite as: arXiv:1302.2850 <https://arxiv.org/abs/1302.2850> [quant-ph] (or arXiv:1302.2850v1 <https://arxiv.org/abs/1302.2850v1> [quant-ph] for this version) @philipthrift -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/02475f46-3e0b-4f63-8dd2-c57c6841bc15%40googlegroups.com.
