I thought one of the main reasons we are making Wikidata is so that you can update a value
there, and then everywhere it is used will be automatically updated. If we find a more
precise measurement for the depth of an ocean trench, then I just want to update it on
Wikidata, and then every article that references it will be updated. I don't want to
have to update it on Wikidata and then go do a null edit on every article that uses that
information.
From: g.m.hagedorn(a)gmail.com
Date: Thu, 4 Apr 2013 22:13:24 +0200
To: wikidata-l(a)lists.wikimedia.org
Subject: Re: [Wikidata-l] Page history and properties
don't see what value we'd gain from
storing that extra metadata. Every
scenario I can think of where you care about past states of the database is
already handled by the compare selected revisions feature.
If that is so simple, can the {{#property:xxx}} call in a wikipedia
simply resolve to the revision that was valid at the point in time
equivalent to a given revision? It seem like you say you already have
the code to do that when creating the wikidata item description.
I disgree that this is an issue for mediawiki core, since it is a
question of how the Wikidata-specific property function works.
Gregor
PS: I admit that Denny has found an example to where an image seems to
be changing in content on commons, but I still believe this is a rare
case. Any wiki-statistician that can supply exact number for these
cases?
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