Basically when we think of sustainability, we have the needs for food, shelter, education and comfort of living healthy. As such we have to design a parameter which is self sustainable and collaborative in approach to the needs. Example: Ahat is the basic area required for agriculture for the needs of a family,what could be grown and how it could be used collectively for needs of different persons growing different crops.?
In my opnion about 10000 sq. ft of land would suffice for a family to be self sufficient for their needs.
Now the question is what has to be grown and what are the needs? What should be the cycle of operation and how it has to be brought to the main stream?
Dwelling on the thought many ideas and inspirations would emere?
When intention becomes a reality the dreams are accomplished.