Yield is theoretically unlimited is one of the key principles of permaculture design

Traditionally, ‘yield’ is thought of as quantity of material output (eg, amounts of potatoes, grain, etc) calculated against resources or effort put in, but there’s no reason why we can’t widen our definition to include information, lessons learned, experience, the health benefits of exercise and being outdoors, or even just plain fun... Within a permaculture design, we will constantly be finding new niches to utilise, new beneficial guilds, learning new techniques, trying out fresh ideas, be gathering knowledge. By comprehending and copying natural systems, we can develop techniques in order to consciously multiply such opportunities...