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- Xref: sparky sci.philosophy.tech:4653 sci.logic:2504
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- Path: sparky!uunet!pmafire!mica.inel.gov!guinness!opal.idbsu.edu!holmes
- From: holmes@opal.idbsu.edu (Randall Holmes)
- Subject: Re: No Reification Here
- Message-ID: <1992Dec30.184028.2949@guinness.idbsu.edu>
- Sender: usenet@guinness.idbsu.edu (Usenet News mail)
- Nntp-Posting-Host: opal
- Organization: Boise State University
- References: <1992Dec28.203018.18876@husc3.harvard.edu> <1hpqgkINNmi6@cat.cis.Brown.EDU> <1992Dec29.114844.18880@husc3.harvard.edu>
- Date: Wed, 30 Dec 1992 18:40:28 GMT
- Lines: 81
-
- In article <1992Dec29.114844.18880@husc3.harvard.edu> zeleny@husc10.harvard.edu (Michael Zeleny) writes:
- >In article <1hpqgkINNmi6@cat.cis.Brown.EDU>
- >PL436000@brownvm.brown.edu (Jamie) writes:
- >
- >>>From: zeleny@husc10.harvard.edu (Michael Zeleny)
- >>>PL436000@brownvm.brown.edu (Jamie) writes:
- >
- >J:
- >>>>But, I don't understand how using unreified predicates instead of
- >>>>objects helps avoid set theoretic paradoxes. Grelling's paradox
- >>>>uses only a predicate, and (unless I'm very confused) does not
- >>>>require reification.
- >
- >MZ:
- >>>You are very confused. If Grelling's paradox is regarded as purely
- >>>syntactical, then it is unproblematic on a Quinian view that requires
- >>>stratification (as spurious as such a requirement might be); if, on
- >>>the other hand, it is regarded as semantical, then the contradiction
- >>>depends on the assumption that the predicate "...is heterological"
- >>>expresses a _bona fide_ property.
- >
- >J:
- >>Well, if I was confused before, I am more confused now.
- >
- >You have my sympathies.
- >
- >J:
- >>First of all, if a view (Quinean or otherwise) requires stratification
- >>to deal with a purely syntactical predicate, then the issue of
- >>reification is not the salient one. Stratification is a strategy
- >>for eliminating the paradoxes whether the predicates are reified or not.
- >
- >Correct. Stratification is a purely syntactical trick. Rage away,
- >Randall.
-
- For Quine, it was; for me, it is not.
-
- >
- >J:
- >>Second, I have no idea whether "is heterological" expresses a bona
- >>fide property. I care only that whether it is a meaningful predicate.
- >>(What would it express if not a bona fide property? A trope?)
- >
- >A predicate is meaningful, if and only if it expresses a property.
- >
- >J:
- >>My point was that the Grelling paradox doesn't depend on any
- >>quantification over properties, nor on a semantics that
- >>assigns objects to predicates. It's solution is (must be)
- >>independent of the question of reification.
- >
- >Well, that depends. I suggested two interpretations of Grelling's
- >paradox. A purely syntactical one is blocked by stratification;
-
- I think the analysis of the syntactical version of the paradox can be
- exactly the same in NFU as in the usual set theory; I have proposed a
- way to use stratification to avoid the paradox, but it isn't necessary
- unless one is trying to pack a lot of strength into the language one
- is using.
-
- on
- >the other hand, the semantical one does not get off the ground, until
- >and unless one comes up with a semantics that assigns a predicate
- >object to the adjective `heterological'. So there you are.
-
- Precisely!
-
- >
- >>Jamie
- >
- >cordially,
- >mikhail zeleny@husc.harvard.edu
- >"Le cul des femmes est monotone comme l'esprit des hommes."
-
-
-
- --
- The opinions expressed | --Sincerely,
- above are not the "official" | M. Randall Holmes
- opinions of any person | Math. Dept., Boise State Univ.
- or institution. | holmes@opal.idbsu.edu
-