What Defines a Breakout Nation?

Ruchir Sharma, author of "Breakout Nations: In Pursuit of the Next Economic Miracles" reveals some surprising yardsticks by which breakout nations are measured -- including the "billionaire's index." He spoke on April 22, 2013, at the Sir Gordon Wu Distinguished Speakers Forum at Columbia Business School, sponsored by the Chazen Institute of International Business. Shang-Jin Wei moderated.