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- Path: sparky!uunet!ogicse!das-news.harvard.edu!husc-news.harvard.edu!husc9.harvard.edu!zeleny
- From: zeleny@husc9.harvard.edu (Michael Zeleny)
- Newsgroups: sci.logic
- Subject: Re: The poor parachutist...
- Message-ID: <1992Aug20.215259.14963@husc3.harvard.edu>
- Date: 21 Aug 92 01:52:58 GMT
- Article-I.D.: husc3.1992Aug20.215259.14963
- References: <1992Aug18.131259.14667@wisipc.weizmann.ac.il> <1185@kepler1.rentec.com>
- Organization: The Phallogocentric Cabal
- Lines: 41
- Nntp-Posting-Host: husc9.harvard.edu
-
- In article <1185@kepler1.rentec.com>
- andrew@rentec.com (Andrew Mullhaupt) writes:
-
- >In article <1992Aug18.131259.14667@wisipc.weizmann.ac.il>
- > jhsegal@wiscon.weizmann.ac.il (Livy) writes:
-
- L
- >>Remember:The man he is asking could be a liar or a honest man.HE (the
- >>parchutist) doesn't know it.
-
- AM:
- >Usually, you encourage the parachutist to ask "What name would a liar give to
- >the other city?". However, I am not convinced that this "works". It makes some
- >assumptions about lying which are not clear. For example, it assumes (which is
- >reasonable) that the honest people have noticed the "liars" and have come to
- >some understanding of what is involved. However, what lying means to the liars
- >is difficult to say, especially since they can't agree on it. Since the truthful
- >citizens know this as well, they give you an answer which a liar would give you,
- >but this is no use unless the liar's answer is well defined.
- >
- >Right?
-
- I think that your worries could be summarized in an observation that the
- above approach will not work in any first-order extensional (i.e. purely
- truth-functional) language, regardless of any additional assumptions about
- the knowledge of the liars and the truth-tellers concerning each other's
- behavior. At least so it would seem at first blush, unless we can
- eliminate the strong conditional by replacing it with some sort of
- dispositional idiom. Would anyone care to try?
-
- >Later,
- >Andrew Mullhaupt
-
- cordially,
- mikhail zeleny@husc.harvard.edu
- "Un de mes plus grands plaisirs est de jurer Dieu quand je bande."
-
- P.S. The Phallogocentric Cabal has concluded its activities for this
- summer. The next meeting will occur during the week of September 18th,
- with Tal Kubo speaking on infinite combinatorics. T-shirts, syllabi, and
- other paraphernalia may be requested by responding to this message.
-