If you enjoyed this article, you might want to look into the work of Joseph Tainter (http://en.wikipedia.org/wiki/Joseph_Tainter http://en.wikipedia.org/wiki/Jo

If you enjoyed this article, you might want to look into the work of Joseph Tainter (http://en.wikipedia.org/wiki/Joseph_Tainter http://en.wikipedia.org/wiki/Joseph_Tainter) and read his book, The Collapse of Complex Societies, http://www.amazon.com/Collapse-Complex-Societies-Studies-Archaeology/dp/052138673X http://www.amazon.com/Collapse-Complex-Societies-Studies-Arc....