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Re: [ontolog-forum] Ontology, Information Models and the 'Real World': C

To: "[ontolog-forum]" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Ingvar Johansson <ingvar.johansson@xxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 31 May 2007 11:37:14 +0200
Message-id: <465E974A.9070402@xxxxxxxxxxxxxxxxxxxxxx>
Waclaw Kusnierczyk schrieb:
> I think we agree.  A context, as treated in IKL, corresponds to a 
> perspective (no cognitive agent implied) on a proposition *as if it 
> were* true or false, irrespectively of whether it *is* true or false.
>       (01)

Dear Waclaw,    (02)

Does this solve the following earlier problem of yours: "The question, 
again, is about propositions. The sentence "no roses are blue" was true 
some time ago, and is false now; but does it correspond to the same 
proposition in both cases? Is it the proposition that changed its truth 
value, or are we really dealing with two distinct propositions: 'no 
roses are blue at t1', and 'no roses are blue at t2'?" ?    (03)

If "no roses are blue" are stated twice (in the way you have described) 
*in the same context*, then it seems to me that a distinction such as 
mine between *sentence meaning* and *used sentence meanings* is 
nonetheless needed as a complement.    (04)

all the very best,
Ingvar    (05)

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