Take a look at the history of that page and the deletion of, for example, information about the "Expulsion of Banu Qaynuqa". That page shows us why Wikipedia i

Take a look at the history of that page and the deletion of, for example, information about the "Expulsion of Banu Qaynuqa". That page shows us why Wikipedia is never a valid source. Whatever anonymous editor wins the edit war decides what the "wikitruth" is.