ABSTRACT
This chapter focuses on the sustainability such that its implementation in urban governance processes can be evaluated. Gallie describes the 'essentially contested concept' as one without solid definition. Based on the literature presented, the study defines sustainability as including five core principles: Acknowledges limits: The planet has overshot firm ecological limits. Cares about the long-term: It is important to consider the well-being of humans and the planet long into the future. Thinks in systems: The world is complex, interconnected, and impossible to fully understand. Deliberative: All relevant actors must be engaged to develop a vision for the future and a plan to get there. Reflexive: Although quick action is required, learning is critical and entails constantly challenging assumptions, checking progress, and changing course. Vob, Bauknecht, and Kemp put forward a model of reflexive governance that draws on Beck's concept of 'reflexive modernization'. Reflexivity is also related to resilience, an increasing focus of literatures on urban sustainability and hazard mitigation.
