Read the hyperinflation series - and the rest - especially the
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http://gonzalolira.blogspot.com/2010/08/how-hyperinflation-will-happen.html
http://gonzalolira.blogspot.com/2010/08/hyperinflation-part-ii-what-it-will.html
http://gonzalolira.blogspot.com/2010/11/two-more-nails-in-dollars-coffinthe.html