Derivatives

I was just reading Paul Krugman's article (love that guy!) and noticed his comment about: ... derivatives, the complex financial instruments Warren Buffett famously described as "financial weapons of mass destruction". I recall when I thought derivatives meant dy/dx. I also recall this humorous look at derivatives. Well ... it makes me laugh. Here's what I larned. ----------------------------- It's been said that: Math may have caused the financial crisis. Conclusion? Math is dangerous!