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Subject: RE: [tm-pubsubj] Contradicting a PSI
* Bernard: | I meant (I think Lars Marius also) a contradiction in the following sense | | Publisher declares a PSI to identify a subject A | User uses it as a PSI to identify a topic X, of which actual subject is B, | not identical to A. | | 'A is not identical to B' means 'it exists some assertion true for B that | is false for A'. | This is the simplest way to say two subjects are different : you can say | something which is true for one and false for the other. Yeuk. Please, let's not go *there*! As SRN is fond of saying: You should never confuse topic maps with the truth! Neither should you restrict topic maps to being non-contradictory. The CIA might have a PSI for Osama that states he's a terrorist. Do I have to agree with that assertion in order to use the corresponding PSID with integrity? I sincerely hope not. The point is to know whether we are talking about the same thing... not whether we have the same opinions about it. Steve -- Steve Pepper <pepper@ontopia.net> Chief Strategy Officer, Ontopia Convenor, ISO/IEC JTC 1/SC 34/WG 3 Editor, XTM (XML Topic Maps 1.0)
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