 One root cause of the financial crisis of 2008 was the very high levels of risk-taking of many banks and other financial agents. When these risks materialized, the financial system came to the brink of collapse. Many banks lost so much money that their normal lending operations were hampered, which in turn had negative effects on the real economy, with the result that millions of “ordinary” people around the world lost their jobs. Many governments stepped in to bail out the banks and in consequence sacrificed other parts of public spending. This is a prime example of how certain financial activities, when run amok, can have devastating effects on third parties and society in general.