Here is a link I ran across on Ritholz's "Big Picture" blog.
The quote below, from the article is descriptive of George Soro's theory of reflexivity.
What is really happening in Greece is the operation of a social-feedback mechanism. Something started to cause investors to fear that Greek debt had a slightly higher risk of eventual default. Lower demand for Greek debt caused its price to fall, meaning that its yield in terms of market interest rates rose. The higher rates made it more costly for Greece to refinance its debt, creating a fiscal crisis that has forced the government to impose severe austerity measures, leading to public unrest and an economic collapse that has fueled even greater investor skepticism about Greece’s ability to service its debt."
And the article by Robert J. Schiller here