I've always believed in an agrarian economic system. Much of our younger generation has forgotten America was once an agrarian nation. It was the ability to garden and farm that saved many depression era families, even those located within large population city limits.
Those little backyard gardens not only fed but provided a means of support during the deepest dark days of the Great Depression. It's quite possible the art of the backyard garden or small farm enterprise will once again save us in the very near future.
I found a very well written essay on the subject last evening during a visit to The Deliberate Agrarian. Do yourself a favor and click the link and take a few minutes from your busy day and read. I believe you'll find the essay very informative.