On Fri, May 13, 2022 at 5:22 AM smitra <[email protected]> wrote: > On 12-05-2022 00:44, Brent Meeker wrote: > > On 5/11/2022 1:06 PM, smitra wrote: > > > >> There is effective collapse in experiments we do, but the > >> experiments nevertheless demonstrate that the fundamental processes > >> proceed under unitary time evolution. > > > > Except when you measure them and actually get a result. > > > > No, there exist no experiment results that demonstrate that unitary time > evolution is not exactly valid. What you are referring to is that in > experiments we do the wavefunction of the measured system (effectively) > collapses. But, because we also know from all the experimental results > that the wavefunction evolves in a unitary way, and experiments are > ultimately nothing more that many particle interactions, that either > unitary time evolution cannot be exactly valid or that the collapse > during measurement is an artifact of decoherence where the observer (and > the local environment) gets into an entangled superposition with the > measured system. The former hypothesis lacks experimental support. >
The multiverse hypothesis also lacks experimental support. We observe collapse every day and in every experiment. We never observe a multiverse. Bruce -- 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/CAFxXSLTFptj7ttYYvfyP6A2Ep%3DMernnzMR4Znmx4Xk6-Nxh4NA%40mail.gmail.com.
