Derivative evaluation in real life

The algorithmic complexity of pricing derivatives and possible intractability are, in a sense, irrelevant, given behavior like that reported below.

McClatchy reports:

As the housing market collapsed in late 2007, Moody's Investors Service, whose investment ratings were widely trusted, responded by purging analysts and executives who warned of trouble and promoting those who helped Wall Street plunge the country into its worst financial crisis since the Great Depression.

A McClatchy investigation has found that Moody's punished executives who questioned why the company was risking its reputation by putting its profits ahead of providing trustworthy ratings for investment offerings.

Instead, Moody's promoted executives who headed its "structured finance" division, which assisted Wall Street in packaging loans into securities for sale to investors. It also stacked its compliance department with the people who awarded the highest ratings to pools of mortgages that soon were downgraded to junk. Such products have another name now: "toxic assets."