- From: Bernard Vatant <bernard.vatant@mondeca.com>
- Date: Tue, 20 May 2008 23:23:59 +0200
- To: Thomas Bandholtz <thomas.bandholtz@innoq.com>
- Cc: semantic-web@w3.org
Hi Thomas > suddenly so quiet here :-) Waiting for you to speak. The silence before Thomas is already Thomas [1] > > Re-reading the OWL spec I found that owl:sameAs has domain & range = > owl:Thing. > So any two concepts which are not derived from owl:Thing cannot be > connected by owl:sameAs. We are in an open world, and domain and range act as both necessary and sufficient conditions. a:foo owl:sameAs b:bar entails a:foo a owl:Thing b:bar a owl:Thing > OWL object properties are not a super market of social > interreferencing :-) > > However, isn't everything an owl:Thing? > I have to confess, reading the specs, I am not that sure. > Am I an owl:Nothing? No, as soon as you declare to be the same as yourself :Thomas owl:sameAs :Thomas entails :Thomas a owl:Thing This is how the open world goes, even if you are alone in it: Good night. You'd better listen to Mozart :) Bernard [1] * *«Quand on a entendu du Mozart, le silence qui suit est encore du Mozart.» (Sacha Guitry, Toutes réflexions faites) -- *Bernard Vatant *Knowledge Engineering ---------------------------------------------------- *Mondeca** *3, cité Nollez 75018 Paris France Web: www.mondeca.com <http://www.mondeca.com> ---------------------------------------------------- Tel: +33 (0) 971 488 459 Mail: bernard.vatant@mondeca.com <mailto:bernard.vatant@mondeca.com> Blog: Leçons de Choses <http://mondeca.wordpress.com/>
Received on Tuesday, 20 May 2008 21:24:53 UTC