... From: <alan_forrester@...> ... after observation it collapses into one possibility. ... messy and incomprehensible, but necessary as a machine for...
908
alan_forrester@...
Apr 1, 2001 8:39 am
... No. Why not? Let's consider the purpose of measurement. The purpose of a measurement is to extract information that can be used to test a theory. This...
909
Charles Goodwin
charles@...
Apr 1, 2001 8:41 am
... From: <alan_forrester@...> To: <Fabric-of-Reality@yahoogroups.com> Sent: Sunday, April 01, 2001 11:43 AM Subject: QCs and the MWI ... Therefore we...
910
admin@...
Apr 1, 2001 8:53 am
... (1), i.e. an equal superposition as before. ... versions of the atom that have emitted and others that have not, and these two versions can interfere. ... ...
911
Charles Goodwin
charles@...
Apr 1, 2001 8:59 am
... From: <admin@...> ... Personally I suspect you're right. But physicists have been arguing about this exact point for almost a century....so -...
912
David Deutsch
david.deutsch@...
Apr 1, 2001 9:23 am
... You've fallen for some very bad metaphysical theories. I think it's high time you read *The Fabric of Reality*, especially Chapter 2. See also my *Comment...
913
admin@...
Apr 1, 2001 10:02 am
... necessarily ... atom ... used to test a theory. ... does not happen in this case. ... Ok. Do you call it measurement or not, do you agree that this event...
914
admin@...
Apr 1, 2001 10:34 am
... device ... about this exact point for almost a century....so - are you ... What happens in photograpic plate is also nothing more but absorption of photons...
915
David Deutsch
david.deutsch@...
Apr 1, 2001 10:35 am
... That's not quite right. It *did* in fact "turn a single-universe probabilistic theory to a multi-universe deterministic theory". But that's not what it was...
916
Charles Goodwin
charles@...
Apr 1, 2001 11:01 am
Yes you're right. I can only say in my defence that I have to fit in my replies in between interruptions from my 2 year old son and therefore have to rattle...
917
David Deutsch
david.deutsch@...
Apr 1, 2001 11:02 am
... When a free wave packet propagates in space without interacting with anything else, the multiverse in that region does not resolve itself into causally...
918
David Deutsch
david.deutsch@...
Apr 1, 2001 11:20 am
... It would have been better to say *multiple* universes. Let's keep the word "parallel" to mean "approximately causally autonomous". -- David Deutsch ...
919
Jonathan Burns
saski@...
Apr 1, 2001 2:38 pm
... No, it doesn't. If a theory predicts a limit to observation, that's a prediction. ... We should not. Time and again we've seen that thinking out all the...
920
Capital Office
development@...
Apr 1, 2001 3:37 pm
... I'm not sure what you're trying to say here. I presume you're not denying the existence of the academic field of study referred to as physiological ...
921
Capital Office
development@...
Apr 1, 2001 3:55 pm
... By my definition (which I must stress I do not take credit for inventing of course!!), things that can't be observed which do have *observable effects* are...
922
Capital Office
development@...
Apr 1, 2001 5:02 pm
... Well, you're correct. But this statement needs to be clarified somewhat. MWI is definitely a scientific theory (of sorts). Its observables are 'real'...
923
Capital Office
development@...
Apr 1, 2001 5:58 pm
... But it > doesn't make any new testable predictions....Or explain underlying > mechanisms....sigh. That leaves us in the position of no interpretation being...
924
Charles Goodwin
cgoodwin@...
Apr 1, 2001 9:42 pm
I agree, as things stand. But I hope that at some point one interpretation or another will lead to a deeper theory which *does* have testable differences. (I...
925
Charles Goodwin
cgoodwin@...
Apr 1, 2001 9:42 pm
... Hm.... didn't you say ealier that science deals only with observables? While I disagree (despite a slight lapse in "positivism" earlier) surely you can't...
926
Charles Goodwin
cgoodwin@...
Apr 1, 2001 9:43 pm
... Another slant on this is that brains have evolved to cope with the terrestrial environment. Every step in that evolution has effectively been a theory...
927
alan_forrester@...
Apr 1, 2001 10:51 pm
... beams ... impossible to write down explicit wavefunctions. But the state of the observer after observing the photographic plate is well defined once ...
928
Charles Goodwin
cgoodwin@...
Apr 1, 2001 10:51 pm
I thought this might be an argument about the meaning of words. So can we agree that the predictions of a theory can be treated as indirect or potential...
929
alan_forrester@...
Apr 1, 2001 10:52 pm
... (1), i.e. an equal superposition as before. ... versions of the atom that have emitted and others that have not, and these two versions can interfere. ... ...
930
alan_forrester@...
Apr 1, 2001 11:11 pm
... There might be a test that can differentiate between the MWI and CI, although I'm not sure whether it would work. A paper claiming that there is such a...
931
David Deutsch
david.deutsch@...
Apr 1, 2001 11:27 pm
alan_forrester@... <alan_forrester@...> wrote on 1/4/01 ... Having read only the abstract there, I don't believe that that paper can be ...
932
Charles Goodwin
cgoodwin@...
Apr 1, 2001 11:51 pm
I couldn't get a copy of this paper from the site - PDF came up blank, other versions they supply don't seem to be supported by my PC . . . if anyone can get a...
933
Jonathan Burns
saski@...
Apr 2, 2001 8:11 am
... I think we have to. Once we permit observers to split, the description of reality asserted by MWI becomes a different thing from what is verifiable by any...
934
Capital Office
development@...
Apr 2, 2001 8:12 am
... To clarify, the observation itself is always real. It is the interpretation of the meaning of the observation that is at issue. In one theoretical ...
935
Capital Office
development@...
Apr 2, 2001 8:13 am
... An extremely interesting question. The short answer is 'possibly', because of the issue of 'incommensurability' as mentioned in my last post. If you give...
936
Capital Office
development@...
Apr 2, 2001 8:14 am
Having re-read some of the recent posts on this thread I fear I may have helped create a confusion with regard to the scientific status of MWI. I would like to...
