Sophie Didier is a geographer, a professor at the Paris School of Urban Planning (École d’Urbanisme de Paris), and a member of the Lab’Urba research unit. Her work examines the circulation of models and the spread of neoliberalism, and more generally the negotiation of urban change by city actors. She recently co-edited—with Claire Bénit-Gbaffou, Sarah Charlton and Kirsten Dörmann—the volume Politics and Community-Based Research: Perspectives from Yeoville Studio, Johannesburg, published by Wits University Press (2019).