Black Swans - unexpected movements in financial markets.
gladwell.com
gladwell.com
What's unexpected is that it took so long to unravel.
I worked in credit structuring for Deutsche Bank and saw first hand the manipulation of credit ratings to engineer 'profit'.
http://www.amazon.com/Black-Swan-Impact-Highly-Improbable/dp...
http://www.amazon.com/Fooled-Randomness-Hidden-Chance-Market...
Thank you, sir, for being willing to take that virtual wedgie for all of the math geeks out there!