This book addresses the on-going crisis of informality in rapidly growing cities of the global South. The authors offer a Southern perspective on planning theory, explaining how the concept of conflicting rationalities complements and expands upon a theoretical tradition which still primarily speaks to global ¿Northern¿ audiences. De Satgé and Watson posit that a significant change is needed in the makeup of urban planning theory and practice ¿ requiring an understanding of the ¿conflict of rationalities¿ between state planning and those struggling to survive in urban informal settlements ¿ for social conditions to improve in the global South. Ethnography, as illustrated in the book¿s case study