Thoreau and Illitch, among others, had interesting ideas. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.576.1031&rep=rep1&type=pdf http://citeseerx.

Thoreau and Illitch, among others, had interesting ideas. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.576.1031&rep=rep1&type=pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.576...