is the opening sentence of this collection of essays by Urban-Think Tank, produced as a special anniversary edition to mark the tenth issue of SLUM Lab. It has a double function as it is also the accompanying catalog of the retrospective exhibition “Si/No: The Architecture of Urban-Think Tank” that opened in the Hauptgebäude at ETH Zürich.
Urban-Think Tank is an interdisciplinary design practice founded by Alfredo Brillembourg and Hubert Klumpner in 1998. As a team they are dedicated to research, practice, teaching, and artistic production focused on the informal city. This publication, presented as a curated anthology of the published work since 2002, also includes essays, articles, book extracts, excerpts from out-of-print issues, archival and documentary photo essays, as well as new contributions from Andres Lepik and Justin McGuirk.