Conversation at the launch of CONCRETE AND CULTURE: A MATERIAL HISTORY, by Adrian Forty, and ALGARVE BUILDING: MODERNISM, REGIONALISM AND ARCHITECTURE IN THE SOUTH OF PORTUGAL, 1925-1965, by Ricardo Agarez, with the authors, João Luís Carrilho da Graça and Johan Lagae, moderated by Marta Sequeira, Auditório da Ordem dos Arquitectos, Lisboa, 2017