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 | This page in a nutshell: Disambiguation of a title that does not conflict with another use of that title on Wikipedia is unnecessary for that purpose. |
Disambiguation on Wikipedia is necessary when two or more uses covered on Wikipedia share the same name, because only one of them can have that ambiguous name as its title - the titles of the other uses must be disambiguated. Unnecessary disambiguation (or unnecessary precision) is disambiguation that is not necessary for this technical reason or any other reason. For example, since the city in Ontario is considered to be the primary topic of Welland, adding ", Ontario" to that title (i.e., moving it to Welland, Ontario) would be unnecessary disambiguation. Since the reason sometimes given for such disambiguation is to "preempt" conflicts with other uses some time in the future, this practice is sometimes referred to as preemptive disambiguation, and is itself often considered unnecessary.