I find it amusing and frustrating by turns when I refer to the GTA as a city, and people I'm speaking to interject to say that no, Vaughan or Markham are their own cities. Yes, that is true in ways that don't really matter. Same with people who think Toronto the city is just the City of Toronto. City of Toronto is just a 'borough' of Toronto. The actual municipal organization is secondary to the economic and social reality that is the GTA. As proof, the province could with a stroke of the pen combine the entire GTA into one municipality. They could not with the same ease change the economic or transportation patterns.