> On 27 Sep 2019, at 23:24, 'Brent Meeker' via Everything List > <everything-list@googlegroups.com> wrote: > > > > On 9/27/2019 12:35 AM, Philip Thrift wrote: >> BTW Sabine Hossenfelder just posted her Many Worlds view: >> >> http://backreaction.blogspot.com/2019/09/the-trouble-with-many-worlds.html >> <http://backreaction.blogspot.com/2019/09/the-trouble-with-many-worlds.html> > Sabine writes: > > The reason is this. In the many worlds interpretation, if you set up a > detector for a measurement, then the detector will also split into several > universes. Therefore, if you just ask “what will the detector measure”, then > the answer is “The detector will measure anything that’s possible with > probability 1.” > > This, of course, is not what we observe. We observe only one measurement > outcome. The many worlds people explain this as follows. Of course you are > not supposed to calculate the probability for each branch of the detector. > Because when we say detector, we don’t mean all detector branches together. > You should only evaluate the probability relative to the detector in one > specific branch at a time. > > That sounds reasonable. Indeed, it is reasonable. It is just as reasonable as > the measurement postulate. In fact, it is logically entirely equivalent to > the measurement postulate. > > This turns on "we only observe one measurement outcome" and this "...is > logically equivalent to the measurement postulate" But the MWI says that we > observe all possible outcomes just as the detector measures all possible > outcomes. She seems to elide the observer splitting, and assumes there's a > "soul" or "person" that doesn't split but instead goes to only one branch of > the MW.
Right, and that is the usual confusion between 1p and 3p, or between []p and []p & p. It is the W-guy saying to the journalist in Washington: “let us forget the M-guy” as we are not in Moscow. 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 everything-list+unsubscr...@googlegroups.com > <mailto:everything-list+unsubscr...@googlegroups.com>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/2b3361d2-b424-234a-6fc9-45e124355efc%40verizon.net > > <https://groups.google.com/d/msgid/everything-list/2b3361d2-b424-234a-6fc9-45e124355efc%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 everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/77848733-BD8B-4BAB-9CF3-8ECE33F61512%40ulb.ac.be.
