In the early 1970s, a young Marxist sociologist named Manuel Castells, then living in exile in Paris, began his soontobe-classic intervention, The Urban Question, by declaring his “astonishment” that debates on “urban problems” were becoming “an essential element in the policies of governments, in the concerns of the mass media and, consequently, in the everyday life of a large section of the population” (1977 [1972]: 1). For Castells, this astonishment was born of his orthodox Marxist assumption that the concern with urban questions was ideological. The real motor of social change, he believed, lay elsewhere, in workingclass action and antiimperialist mobilization. On this basis, Castells proceeded to deconstruct what he viewed as the prevalent “urban ideology” under postwar managerial capitalism: his theory took seriously the social construction of the urban phenomenon in academic and political discourse, but ultimately derived such representations from purportedly more foundational processes associated with capitalism and the state’s role in the reproduction of labor power. Four decades after Castells’s classic intervention, it is easy to confront early twentyfirstcentury discourse on urban questions with a similar sense of astonishment — not because it masks the operations of capitalism but because it has become one of the dominant metanarratives through which our current planetary situation is interpreted, both in academic circles and in the public sphere. Today advanced interdisciplinary education in urban social science, planning, and design