Part of it is that we're mixing two things that are a bit arbitrary. How "urban" a city is and what the limits of a "city" are. Both of these are fungible by t

Part of it is that we're mixing two things that are a bit arbitrary. How "urban" a city is and what the limits of a "city" are. Both of these are fungible by the community, as they should be. Urban living where I grew up would probably still include a backyard, in SF it probably includes a garage, in NYC it includes neither. The city of SF is pretty strictly defined, but the city of San Jose certainly has more fungible boundaries as well (santa clara vs milpitas vs san jose).