Re: Short Self-Reference Puzzle
From: Babylonian_Astrologer (starofbabylon_at_yahoo.com)
Date: 08/15/04
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Date: 15 Aug 2004 01:23:58 -0700
greeneg@cs.unc.edu (George Greene) wrote in message news:<992b156f.0408141230.2a6eb51b@posting.google.com>...
> chvol@aol.com (Charlie-Boo) wrote in message news:<3df1e59f.0408140603.450836cc@posting.google.com>...
> > starofbabylon@yahoo.com (Babylonian_Astrologer) wrote
> > > chvol@aol.com (Charlie-Boo) wrote
>
> > > > Display a sentence that expresses a predicate that is true of only the sentence.
> > > >
> > > > Charlie Volkstorf
> > > > Cambridge, MA
> > > >
> > > > (I use pronouns "it", "that", etc. for input variables.)
> > >
> > > This sentence was posted to sci.logic by Babylonian_Astrologer on 8/14/04.
> >
> > Yes!
>
> No.
>
> First, you have to identify the predicate.
>
The problem was, to explicitly state the predicate would seem to
require another sentence, and I couldn't post another one until the
15th.
> If the predicate is "was posted to sci.logic by by
> Babylonian_Astrologer on 8/14/04", then, OBVIOUSLY, "this sentence" is
> NOT the only thing that the
> predicate is true of. The sentence had to be posted IN A MESSAGE, in
> a posting.
> That post was ALSO posted sci.logic by Babylonian_Astrologer on
> 8/14/04,
> and it is NOT the sentence (it is a proper superpart of it).
> Similarly,
> all proper subparts of the sentence were also posted, and they are not
> the sentence either. The group-name "sci.logic" was posted to
> sci.logic
> by Babylonian_Astrologer on 8/14/04, and the date "8/14/04" was posted
> to
> sci.logic by Babylonian_Astrologer on 8/14/04. Thus the predicate is
> true
> of at least 3 things more than just of the 1 sentence itself.
>
> But this is still right in principle. If the predicate is
> "is a sentence that was posted to sci.logic by Babylonian_Astrologer
> on 8/14/04"
> then you can just put "This" in front of that, and it will work.
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