On Friday, September 27, 2019 at 1:40:44 PM UTC-6, Brent wrote: > > > > On 9/26/2019 11:41 PM, Philip Thrift wrote: > > > > On Thursday, September 26, 2019 at 7:01:19 PM UTC-5, Lawrence Crowell > wrote: >> >> On Wednesday, September 25, 2019 at 6:54:59 AM UTC-5, John Clark wrote: >>> >>> It seems that nearly everyone on the list has a strong opinion >>> about Sean Carroll's new book, but has anyone other than me actually read >>> it? >>> >>> John K Clark >>> >> >> I have not read his book, but I have read his papers and the one he >> coauthored with Sebbens. I know what he has done. I am definitely agnostic >> about MWI as I am with all interpretations. Carroll and Sebens has though >> opened the door to a relationship between the Born rule and MWI, and I >> suspect quantum interpretations in general. Now that is something I find >> potentially very interesting. >> >> LC >> > > > > See if Sean Carroll answers the question of "weighing" worlds: > > *How much is too Many Worlds, is it just right?* > https://groups.google.com/d/msg/everything-list/E3WLUdnW8jI/MLPg3dAhAgAJ > > > Suppose world W branches (in reality, not in "bookkeeping") to worlds W0 > and W1. > > If reality is pure information (basically purely mathematical bits of 0s > and 1s), then that sort of "production" seems OK. > > But what if W is (or contains) matter. Based on matter contents of W, W0, > and W1: > > *If the matter contents of W0 plus W1 combined is greater than the matter > content of W, **how was the extra matter "produced"?* > > > Two answers so far: > > 1. *If an infinity of indiscernible universes already exist at the start > and are only differentiating/diverging (instead of splitting), then no > matter is created, all of it was already there.* > > 2. *Differentiation rather that duplication of matter is one possibility, > but duplication of matter is not logically impossible either. Empirically, > we have that matter cannot be created, but that is within a single world.* > > > The "new" matter (and energy and space and information) are discounted by > the probability of their existence. It seems curious to me that the MWI > advocates want to take the wave function ontologically but not the Hilbert > space. From the viewpoint of Hilbert space all the different "worlds" are > just subspaces on which the wave-function of the multiverse can be > projected. A world "splitting" is just the unfolding of a world into two > orthogonal subspaces. > > Brent >
*Are there any distinguishing features to these orthogonal subspaces? If we traveled to one of them, would we detect anything different or unusual from the space in which we previously resided? AG * -- 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/d7e2cccd-9b92-4c44-88f1-f2a7ea53b010%40googlegroups.com.
