I was hoping that you could discuss the different possibilities of permaculture installations specifically in the urban environments with varying amounts of maintenance. I am thinking about the elderly that may have a lot of time, but not the strength and/or energy to do much with their property. Also the very busy people that may have the strength and energy, but not the time to work much on a system. I can see these being installed as a business, or simply by friends or family. Is it simply a fantasy to want to put in extremely low, or no maintenance systems in small areas that are still reasonably productive?