ABSTRACT. Salter and Meserve hold that to be a real geographer, one must observe: there is great power in observation. Soja claims that geographically uneven development, reproduced at multiple scales, is inherent to the concretization of capitalist social relations. Mayhew explains that a history of geography should be concerned with the past for its own sake. Callicott emphasizes that a new scientific paradigm is emerging which will sooner or later replace the waning mechanical worldview and its associated values and technological spirit. Smith states that fluids and flows, actant networks, performances and practices fold the spaces and times of cities in ways that question the privileging of geometrical space and linear time in explanations of global and world cities.