Warren Buffett is perhaps the country's most respected investor. He's known for making thoughtful, common-sense decisions. Which is why this week the business world took note when he abstained from voting against a pay package for executives at Coke that he called excessive. This week on Money Talking, regular contributors Joe Nocera of the New York Times and Rana Foroohar of Time magazine weigh in on Buffett's motivation and what it says about the state of corporate boards in America. Plus, a discussion of why a 700-page book — Capital in the Twenty-First Century by French economist Thomas Piketty — is topping the charts on Amazon.