Whose Knowledge Counts in the Planning of Urban Sustainability? - Investigating Handbooks for Nudging and Participation

When planning sustainable districts, planners mediate between the knowledge claims of citizens and experts. The planning strategies nudging and participation provide contradictory ideas about how planners can perform this mediation. We analyse handbooks for the two strategies, guided by the question: whose knowledge counts? These handbooks provide citizens, experts and planners with varying degrees of authority. While nudging positions behavioural experts as holding authority, and citizens are central in participation, planners feature in the background in both strategies. We show how these seemingly apolitical strategies are actually value-laden. Implementing them literally will undermine planning for urban sustainability.