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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
