"Crossover" is the very first publication by the Delft School of Design (DSD), a laboratory for research and experimentation in architecture, urbanism and technologies of construction at the TU Delft. Its investigations cover a wide variety of subjects, from theoretical considerations and historical studies to urban and architectural practices and contemporary structural design. What they all have in common is the emerging condition of architectural and urban knowledge in both the academic context and professional practice. Since its inception in 2003, the DSD has developed a strategy or field of inquiry for mapping new means of approaching the complexity of the contemporary urban and architectural conditions. Traditional approaches are seen to be increasingly inadequate in the face of this complexity, and new technologies offer us the challenge and the potential to represent our world in unprecedented ways.