In this final chapter, I want to discuss in more detail the relationship between the interests that shape participatory spaces and interactions within such spaces. The relational approach briefly outlined in Chapter 1 helps, I suggest, to connect the external boundaries of participatory spaces to what goes on within them. Their relations go both ways: first, external conditions are imposed on participants by shaping the boundaries of participation – what participation can come to mean and what it can achieve; but second, participants also affect those conditions, either by contributing to their reproduction through cooperative practices that support the view that the interests and institutions dominating urban politics are legitimate or by destabilizing them by conditioning their participation and renegotiating the terms.