The document discusses efficiency in multilevel governance and coordination between private and public sectors. It notes there are different types of squares that can be privately or publicly owned with different characteristics. Coordination between levels of government involves different negotiation approaches. Governance involves complex roles for different levels of government in areas like finance, regulation and management. Effective systems evolve through interactions between technology, economics, politics and culture over time, shifting between more private or public sector control. Ordering systems can emerge from spontaneous coordination as well as centralized planning, each with risks of market or government failure. The document questions how efficiency in governance across different spatial levels and sectors can best be achieved.