Each of these hybridized conditions reflects to varying degrees the reciprocating influences of the urban and the suburban. Each also offers opportunities for innovation in new formal and spatial practices that re-configure conventional understandings of urban and suburban, and in new ways of forming the evolving American metropolis. Based on this new understanding, De Jong argues for the development of new ways of building the city. Aimed at students and practitioners of urban design and planning New SubUrbanisms attempts to re-frame the contemporary metropolis in a way that will generate more instrumental engagement – and ultimately, better design.