From: Bruno Marchal <marchal.domain.name.hidden>
To: kurtleegod.domain.name.hidden
Cc: everything-list.domain.name.hidden; Bruno Marchal <marchal.domain.name.hidden.ac.be>
Sent: Fri, 26 Aug 2005 16:53:41 +0200
Subject: Re: subjective reality
Sorry for answering late, but I got some hardware problem.
On 23 Aug 2005, at 16:44, kurtleegod.domain.name.hidden wrote:
[GK]
> I believe that YD is incompatible with the whole formalism of QM
which
> I don't quite think is simply reducible to Unitary Evolution plus
Collapse, by the way.
> But if you put it that way, yes, it is the conjunction of both that
does it
> (and entanglement, of course!)
[BM]
This I knew. The collapse is hardly compatible with comp (and thus
YD). Even Bohm de Broglie theory, is incompatible with YD.
[GK]
> I am afraid I don't understand what you mean by this! Are you saying
that Everett
> based his interpretation of QM on the premise that YD is true? I
strongly doubt that...
[BM]
I do think so. See Deutsch book which make clear that the MWI is based
on comp. But it is explicit in Everett and in Wheeler assessment. From
a strict logical point of view, ad hoc non comp theory of MWI can be
built but it is really out of topic.
[GK]
That may be Deutsch's opinion (though, again, I doubt he says anything
like that in his book) but I have read both
Everett's thesis and both Wheeler's and DeWitt's defenses of it and in
no way shape or form does anything like YD
even figure in them!!!
[GK]
> Plus I think much the same can be said about quantum immortality a
few other Deutschian and Tiplerian notions
> that you take, let us just say, a little too much to the letter. The
general idea is that one has to be extremely
> careful in the use of conventional terms in the quantum context
because they may not even be definable...
[BM]
This is true for all context. Nevertheless "my theory" does not assume
QM. My point is that QM must be derivable from comp in case comp is
true (making comp completely testable). QM is NOT *assumed* in comp,
indeed one of my goal is to explained where the laws of physics come
from, so I should better not presuppose them.
Bruno
http://iridia.ulb.ac.be/~marchal/
[GK]
Let me understand this: your aim is to derive QM from an hypothesis
which, you know, is contradicted by QM ?!!!? Wow!
I only have two words for you Bruno: good luck!
Best regards,
Godfrey,
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Received on Fri Aug 26 2005 - 17:51:07 PDT