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- Path: sparky!uunet!gatech!rutgers!dziuxsolim.rutgers.edu!ruhets.rutgers.edu!bweiner
- From: bweiner@ruhets.rutgers.edu (Benjamin Weiner)
- Newsgroups: sci.physics
- Subject: Re: Unprovable true statements (was Structure of Time)
- Message-ID: <Jul.29.19.56.44.1992.22038@ruhets.rutgers.edu>
- Date: 29 Jul 92 23:56:45 GMT
- References: <1992Jul28.102429.1@tnclus.tele.nokia.fi> <76738@ut-emx.uucp> <1992Jul29.180144.19705@linus.mitre.org>
- Organization: Rutgers Univ., New Brunswick, N.J.
- Lines: 32
-
- Dave Chaloux writes:
- >Yaron Sheffer writes:
- >>This one's easy: Truth is measureable in the lab, or observable in the
- >>Universe, and in any case should be consistent and causal with anything
- >>that we have ever observed/measured ...
- >
- >I was under the very definite impression that mathematicians have shown that
- >the number of true statements is a larger order of infinity than the number of
- >proofs and that therefore there are true statements that cannot be proved.
- >If I am wrong, I'm sure this will be pointed out 8), but if true this should
- >make one think twice about statements like the above.
-
- If you're talking about incompleteness theorems, I'm not sure I would
- phrase it the way you did, but it is in general true that with a finite
- system of axioms there are statements which are true but cannot be
- proved (thus the axioms are incomplete, hence the name).
-
- However, Yaron said that all true things ought to be
- _consistent_ which is a far cry from being provable. In fact a
- statement inconsistent with your axioms is generally regarded as
- "false" (within that system of axioms that is). There are not too
- many true statements which are false. In any case, what Godel-
- theorems mean for something so logically lumpy as experimental
- science isn't very clear.
-
- Personally I rather doubt that "Truth is measurable in the lab,"
- though, and have a little trouble with Truth-with-a-capital-T,
- but maybe that just shows that I was never cut out to work on
- quantum gravity.
-
- Take with more salt then usual, I'm not a very good logician.
- Ben Weiner
-