> On 17 Sep 2019, at 20:08, 'Brent Meeker' via Everything List > <[email protected]> wrote: > > > > On 9/17/2019 6:32 AM, Bruno Marchal wrote: >> >>> On 14 Sep 2019, at 05:32, Philip Thrift <[email protected] >>> <mailto:[email protected]>> wrote: >>> >>> >>> >>> On Friday, September 13, 2019 at 6:25:43 PM UTC-5, Lawrence Crowell wrote: >>> as far as I can see [MWI is] just an auxiliary set of physical axioms one >>> can work with in various ways. I have no idea whether there really are >>> 10^{200} versions of me splashed across the type III multiverse. >>> >>> LC >>> >>> >>> >>> Are there any programs using "MWI axioms" in any computational QM >>> programming* to do materials science, chemistry, cosmology, etc. that give >>> them an edge over other methods in terms of making better predictions? >>> >>> If not, MMI is a waste of time, and pseudoscience. >> >> There is no MWI axioms. MWI is just usual quantum mechanics where the >> collapse postulate has been thrown out. (And no need to take the word >> “worlds” too much seriously: it is more relative states or histories. With >> mechanism, they are all already emulated just in virtue of 2+2=4 & Co. > > When MWI throws out the collapse postulate it loses the connection with > results and records.
That would be like saying that Mechanism has to be false, because it cannot answer where I will feel to be after a duplication. That is not valid. > It struggles to recover that and resorts to equally questionable methods, > such as averaging over the environment, to connect with experiment. I disagree with this. Gleason theorem justify the unicity of the measure, and Everett reduces “correctly” the quantum indeterminacy as a mechanist self-localisation of some sort. Then the decoherence theory gives a prominent role to the environment, like mechanism gives a prominent role to the structure of observable consistent continuations. Difficulties remain, sure, both in QM and M, but it seems to me that the non-collapse poison is less fatal than assuming a collapse in QM, especially that it confirms Mechanism. Bruno > > Brent > > -- > 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] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/4a684794-4c07-83f5-9d84-878ccfb24fb0%40verizon.net > > <https://groups.google.com/d/msgid/everything-list/4a684794-4c07-83f5-9d84-878ccfb24fb0%40verizon.net?utm_medium=email&utm_source=footer>. -- 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/6113A2FF-33CB-4DA2-8C8B-D09EFEAD1BDD%40ulb.ac.be.
