On Friday, December 15, 2017 at 5:20:34 AM UTC, Brent wrote: > > > > On 12/14/2017 6:27 PM, Jason Resch wrote: > > >> *I don't see how Wigner's friend presents a problem for Copenhagen. >> According to the CI, the wf collapses when the system measured, which is >> when the box is opened. What am I missing? The issue of the cat's memory is >> a different matter, problematic IMO. AG * >> >> > > The problem is according to the CI, an isolated system evolves according > to the Shrodinger equation, and therefore does not collapse. But it also > says observation causes collapse. > > > That is not CI. CI always supposed there is a classical realm in which > measurements and observations were made by classical devices. Wigner toyed > with the idea that consciousness was required, but that was never Bohr's > idea of CI. In a sense, decoherence filled in CI by providing the > mechanism of collapse. > > Brent >
*Jason's comment and yours are not necessarily in contradiction. How did decoherence provide the mechanism for collapse? Isn't it more a hope than a reality? AG * > > So when you have a conscious observer who is himself part of an isolated > system, from the point of view of another conscious observer, which rule > wins? > > > -- 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 everything-list+unsubscr...@googlegroups.com. To post to this group, send email to everything-list@googlegroups.com. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
