Re: modal logic and possible worlds

From: Tim May <>
Date: Tue, 13 Aug 2002 21:29:07 -0700

On Tuesday, August 13, 2002, at 08:47 PM, Wei Dai wrote:
>> Seen this way, category and topos theory are worth studying for their
>> own sake. I don't think it is likely that "every conceivable universe
>> with consistent laws of mathematics has actual existence" (to nutshell
>> my understanding of Tegmark's theory) is actually true (whatever that
>> means). Nor do I take Schmidhuber's "all running programs" notion very
>> seriously. Interesting ideas to play with, and to use some tools on.
> Well why don't you take these ideas seriously?

Lack of even the slightest piece of evidence for "all possible
mathematical universes actually exist" and/or "the all runnable computer

I also don't believe there are gods or other supernatural beings, for
the same reason.

If and when I see an experiment that points to there being other
universes which have tangible existence, then I'll start to believe.

--Tim May
"That the said Constitution shall never be construed to authorize
Congress to infringe the just liberty of the press or the rights of
conscience; or to prevent the people of the United States who are
peaceable citizens from keeping their own arms." --Samuel Adams
Received on Tue Aug 13 2002 - 21:40:30 PDT

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