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- Newsgroups: alt.philosophy.objectivism
- Path: sparky!uunet!srvr1.engin.umich.edu!malgudi.oar.net!news.ans.net!nynexst.com!gallifrey!baruch
- From: baruch@nynexst.com (Robert Baruch)
- Subject: Re: Premises of "objectivism?"
- Message-ID: <1993Jan21.144005.26462@nynexst.com>
- Sender: news@nynexst.com (For News purposes)
- Reply-To: baruch@nynexst.com
- Organization: NYNEX Science & Technology, Inc
- References: <TORKEL.93Jan20192830@bast.sics.se>
- Date: Thu, 21 Jan 93 14:40:05 GMT
- Lines: 57
-
- In article 93Jan20192830@bast.sics.se, torkel@sics.se (Torkel Franzen) writes:
- > In article <1993Jan20.170740.10203@nynexst.com> baruch@nynexst.com
- > (Robert Baruch) writes:
- >
- > >So when I say "A = not-A" is meaningless, I mean it in the semantic *and*
- > >logical-proposition sense.
- >
- > "A=not-A", whatever this may mean, does not figure in this context,
- > but rather the definition
- >
- > A = "A is false"
- >
- > which is not in any way meaningless, but a mere stipulation, whereby
- > the letter "A" is stipulated to designate the string "A is false".
-
- > Here it it must be understood that "false" is taken to be a property
- > of sentences, so more explicitly we may define instead
- >
- > A = "A is a false sentence"
- >
- > Your further comments don't touch on the issues that arise if we take the
- > view that A, thus defined, is not a meaningful sentence.
- >
-
- I want to point out that a "stipulation" is a demand for agreement. I can't
- agree to something unless I analyze it's meaning.
-
- But, let us continue. You say that A is a sentence. And you define A.
- If you expect me to accept the definition, you must first tell me if you
- want me to treat A as a collection of symbols without meaning, or as a
- collection of symbols with meaning.
-
- If you tell me that A is a collection of symbols without meaning (which
- happen to spell "A is false"), then I will agree to your definition, and
- state that it is a meaningful definition now that you declare A to be
- without meaning.
-
- But if you say that A is a collection of symbols with meaning, then I must
- analyze the meaning as follows:
-
- You say
- that A is sentence which is false. This implies that A has a fixed truth
- value. But then A is a logical proposition, because a logical proposition is
- a statement which has a fixed truth-value, and your fixed truth-value is
- "false".
-
- But when I treat A as a logical proposition, I find self-contradiction, and
- so I conclude that A is not a logical proposition. Yet you claim it is, because
- you claim that A is false.
-
- I won't get into a repeat of my argument of the last post; you already know it.
-
- But you rejected it out of hand. You must tell me if you want me to analyze
- the meaning of A, or if you want me to close my eyes to any possible meaning
- of A, and just treat it as a collection of symbols.
-
- --Rob
-