Rodrigo Perez de Arce's essay Urban Transformations and Architectural Additions was published during the formative stages of Post Modernism, at the point where theory was becoming seriously established. Jencks' first essays formalising the term Post Modernism in architecture and the revised Learning from Las Vegas were published the previous year. In planning terms, modernism had become associated with comprehensive redevelopment and forms of urban organisation that ignored context, history and any sense of tradition. De Arce considered the essential nature of buildings and the richness of...