 : Categories are, first and foremost, a system to help people find articles. But if an article is in a category that doesn't exist — especially if that's the article's only category — then the article can't be found through that method. Look at it this way: if you were running a library, would you keep actively circulating books in a locked storeroom which your clientele couldn't access and didn't even know about, and then still expect them to be able to find and sign out those books without difficulty? No, you wouldn't — if a book is meant to circulate, then it has to be out on display on an active, publicly accessible shelf or rack.   