Would you live in a self- sufficient community, based in subsistence agriculture?, or nowadays these economic units are non-viable, and you would prefer to orient the community effort to produce an exchangeable surplus?.
http://www.youtube.com/watch?v=tyHLtMJnlzQ
http://www.youtube.com/watch?v=roB8CO2Y6ko
http://www.youtube.com/watch?v=pvbiPuDnR6k
http://www.youtube.com/watch?v=GB-AEpOtgzk