 These projects, often large and complex and providing mixed-use space for housing, offices, commerce, health care and other uses, are recognized as having the systemic properties of large private (or public) infrastructures.They involve many decision-making bodies and users over long time periods and often implicate numerous territories.As such, they present technical, economic, political and cultural questions that go beyond the architectural discourse that tends to emphasize the special case, formal gymnastics, and the self-expression of the designer or client.