Until the nineteen-seventies, Western countries paid little attention to corruption overseas, and bribery was seen as an unpleasant but necessary part of doing business there. In some European countries, businesses were even allowed to deduct bribes as an expense.

There are certainly valid reasons for taking a company private, and it's also possible that C.E.O.s perform better when monitored by a small number of owners in a private company rather than by the dispersed and often uninterested shareholders of a public corporation.

Being unemployed is even more disastrous for individuals than you'd expect. Aside from the obvious harm - poverty, difficulty paying off debts - it seems to directly affect people's health, particularly that of older workers.

The financial crisis of 2008 was not caused by investment banks betting against the housing market in 2007. It was caused by the fact that too few investors - including all of the big investment banks - bet too heavily on the housing market in the years before 2007.

In part because individual judgement is not accurate enough or consistent enough, cognitive diversity is essential to good decision making.

Solyndra's failure isn't a reason for the government to give up on alternative energy, any more than the failure of Pets.com during the Internet bubble means that venture capital should steer clear of tech projects.

Wall Street has come a long way from the insider-dominated world that was blown apart by the Great Depression.