Re: modal logic and possible worlds

From: George Levy <>
Date: Fri, 16 Aug 2002 16:39:26 -0700

I have been following the latest very scholarly exchange involving
different logical models in relation to the MWI, however I fail to see
how it relates to my own perception of the world and my own
consciousness unless I think according to those formal systems which I
think is unlikely.

Using different logical models to describe possible worlds is
interesting but isn't it true that if the problem of consciousness (as
an observer, and definer, for these worlds) is to be addressed, then
the only logic that matters is the one in my, or in your, own head? Of
all these logical models which one is the "right" one? Are all of them

When Copernicus formulated the heliocentric system, he didn't go around
saying that a "new" logic had to be used to explain the central position
of the sun. He simply used a physical model. People just had to accept
the new paradigm that the Earth "moves" even though they do not feel the
Earth move. Can't we just accept the fact that the world - and our
consciousness - "split" or "merge" even though we do not feel them
"split" and "merge?" It seems to me that if we define a good physical
model, then classical probability could do the job of formulating the
decision theory desired by Wei.

Received on Fri Aug 16 2002 - 16:42:27 PDT

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