‘Keep — it already has an article on the Italian Wikipedia.’ That argument turns up often enough in English-language deletion discussions that closing administrators have a standard answer for it, and the answer settles nothing. Wikipedia runs as some three hundred separate projects, each with its own volunteers, its own sourcing culture, and its own line for what earns a page — a patchwork of distinct communities rather than one encyclopedia simply available in three hundred languages.
The differences are not cosmetic. In the early 2010s, a bot named Lsjbot generated more than two million short articles on Swedish and Cebuano Wikipedia — a few sentences on a beetle species or a hamlet, sourced to a database rather than to any independent coverage. Nothing resembling that bot run has ever been authorized on English Wikipedia, where a single-source stub padded out with an infobox routinely fails its first deletion discussion. A subject can clear one project's bar by a wide margin and never approach another's, and the size of an edition reflects its community's editing habits far more than any shared judgment about what counts as notable.
Arguments that similar topics exist, or do not exist, elsewhere are generally not sufficient on their own to support a position in a deletion discussion.
Some of the confusion traces back to Wikidata, the structured database that links an article in one language to its counterparts in others through what is called a sitelink. A Wikidata item can carry a sitelink to the Italian Wikipedia and none to the English one, simply a record of what exists rather than any claim about what should. Delete the English article and the Wikidata item survives untouched, still listing the surviving editions, which is exactly how a search engine can keep surfacing a Wikipedia result for a subject that English Wikipedia reviewed and declined.
What does carry across is the material underneath a page, not the page itself. If the Italian article cites a regional newspaper's investigation or a German trade magazine's profile, that source can be brought to an English deletion discussion on its own footing and judged for independence and reliability like any other. The citation travels. The verdict a different community reached with it does not, because that verdict answered a different project's question, under that project's own threshold and review.
Hearing that a subject ‘is already on Wikipedia’ in some other language is hearing a true, incomplete sentence. The encyclopedia that matters to an English-language reputation question is the one an English deletion discussion will actually weigh, built on sourcing an editor still has to bring to that discussion rather than a sitelink pointing somewhere else.
