On Tue, Jan 21, 2014 at 04:08:23PM +1300, LizR wrote: > They talk about changes spreading out, perhaps gradually. ISTM that some > changes aren't going to propagate very far or very fast. So the universe is > full of bubbles in which there are a lot of local branches and I guess > spaces in which they don't make enough difference to spread, or not much... > Which sounds more like your source contol system, well, sort of. > > > On 21 January 2014 14:56, Pierz <[email protected]> wrote: > > > A second question/thought on MWI. MWI proposes that the entire universe > > splits at the point of wave collapse, or rather that it is continually and > > infinitely splitting with every possible quantum state. This has been > > understandably criticised as a vastly extravagant explanation. A whole > > universe, or even infinity of universes, for every quantum interaction > > seems a high price to play to eliminate the weirdness of wave collapse. Yet > > it seems to me that we can still get the explanatory benefits of MWI > > without this extravagance by seeing the situation slightly differently. > >
An alternative interpretation, which I've long espoused, is that "universe" or "world" is an observer-relative or observer-defined thing. When a "split" or "differentiation" event occurs, what is actually happening is that one mind becomes two minds, each of which has an additional bit of information added to their respective observed "worlds". A completely local process, to the extent that minds are local, but nothing gets propagated at the speed of light. The actual Multiverse, of course, is completely unchanged in this process, it continues on its unitary course, conserving information and all that. Nothing ontological (I carefully chose this word instead of physical) gets created. I believe this interpretation goes by the name of "Many Minds", but I haven't found a clear enough explication of Many Minds to be sure. However, it is a distinctly different interpretation to the einselection model of Deutsch, Zeilinger and co, although I know of no physical situation where the interpretations can be distinguished, so it ultimately comes down to personal taste as to what strange pill you are prepared to swallow. Cheers -- ---------------------------------------------------------------------------- Prof Russell Standish Phone 0425 253119 (mobile) Principal, High Performance Coders Visiting Professor of Mathematics [email protected] University of New South Wales http://www.hpcoders.com.au ---------------------------------------------------------------------------- -- 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 http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
