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To erase a souce and to replace it with a ""fact tag"" is not to ""think an edit is helpful"". The only definition is ""vandalism"". ""Ninguém"" is a not a new user, he does know very well what he is doing in Wikipedia. He knows very well that I posted a source that gives the 3 million figure, and there was no reason to reverte my edit, unless he was trying to rise another disruption, as usual.   "