Dan Ariely compares the pharmaceutical industry to finance:
[O]n average, it takes about 10-15 years and hundreds of millions of dollars for a drug to make it from the lab to the pharmacy. … In stark contrast, we have the financial industry. In this domain, no one needs to prove the safety or effectiveness of financial products such as derivatives and mortgage-backed securities. This is because we make two major assumptions about such products based on economic theory: we presume first that they have sound internal logic and second, that the market will correct problems and mistakes if something goes awry with one of these new inventions.