“…What remains overlooked, however, is what we might call the genealogy of the concept, tracing its lineage as an orientalist epistemology, and reasons for why the term continues to have such salience today. Though ideas of informality have increasingly drawn critical analysis (Banks et al., 2020) – with researchers exploring, for example, histories of urban informality (De Antuñano, 2020), its diversities and different scales (e.g., Harriss-White, 2020), and its material and discursive effects (e.g., de Souza Santos, 2021) – still lacking is historical perspective of the term, including the ways it helped change and preserve understandings of urban space in the late 20th century. We explore these processes in this article, focusing our analysis on informal housing (viz, favelas) in the city of Rio de Janeiro.…”