Am 09.01.2017 um 11:16 schrieb Peter F. Patel-Schneider:
> Although there is no formal problem here, care does have to be taken when
> modelling entities that are to be considered as both classes and non-classes
> (or, and especially, metaclasses and non-metaclass classes).  It is all too
> easy for even experienced modellers to make mistakes.  The problem is worse
> when the modelling formalism is weak (as the Wikidata formalism is) and thus
> does not itself provide much support to detect mistakes.  The problem is even
> worse when the modelling methodology often does not provide much description
> of the entities (as is the case in Wikidata).

That's what I meant by "problematic". I did not mean to say it's *wrong* per se.


-- 
Daniel Kinzler
Senior Software Developer

Wikimedia Deutschland
Gesellschaft zur Förderung Freien Wissens e.V.

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