Hülya Ertas will be our guest in the Sofa Talks series, set-up by Gideon Boie and Lieven De Cauter. Hülya Ertas is architect, editor-in-chief of the monthly published XXI Architecture and Design Magazine, currently a PhD researcher at the KU Leuven Faculty of Architecture, Campus Sint-Lucas Brussels, and member of CivicWise network and the Alt_Shift* research group. Find more info here. In the sofa talk we will discuss with Hülya Ertas how to build the knowledge commons in architecture, social practices of hacking, feminism in architecture, and other means to overturn the system. The sofa talks are part of the Architecture & Activism seminar (KU Leuven Faculty of Architecture) and hosted by CIVA.