On 9 November 2015 at 08:45, Daniel Kinzler daniel.kinzler@wikimedia.de wrote:
Also, is this a temporary thing? Will Wikidata eventually have items for every book published, every musical recording, etc. and become a superset of all those unique identifiers?
It's highly unlikely that wikidata will become a superset of any and all vocuabularies in existance.
Agree.
*However*, there are some things where we may be able to say with confidence "Wikidata has a comprehensive set of X" (eg catalogues such as P1186). It might be worth thinking about whether we should record these identifier properties as "will always be incomplete", "probably complete", "expected to eventually be complete", etc. If a user queries for an ISBN we don't have, the chances are high that it's a good ISBN we don't cover - but if they query for a country code we don't have, the chances are high that it's an invalid code...