This article, which introduces the special section on The Urban Problematic, takes as its starting point the ways in which categories associated with the ‘urban’ have broken down, such that the once singular and coherent concept ‘city’ has disintegrated in certain ways: the notion has been demythologized, so that representations of the city must now be regarded as partial and invested; and cities themselves have become opaque and unpredictable both to urban scholars and to governments, planners and various kinds of (...) welfare organizations. The indications of crisis, captured for instance by concerns about the slums, favelas and shanty towns of the world’s megacities, also indicate that much of what counts in modern urban life is in some way connected with the marginal, the unofficial, and the supplemental. The article takes a supplemental view of the current state of urban dwelling. This involves at the same time a longer, more patient, historical view in its attempt to understand the current state of the city as part of a shift in the play of heterogeneous forces. With reference to the articles contained in The Urban Problematic, this introductory article finally draws attention to some of the urgent and critical issues of contemporary urbanism. (shrink)