BBC World Business hears from best-selling French economist Thomas Piketty, and asks Irwin Stelzer whether Piketty's theories on wealth distribution could ever become policy.

Caption
Dr. Alex Karp. (Wall Street Journal photo)
BBC World Business hears from best-selling French economist Thomas Piketty, and asks Irwin Stelzer whether Piketty's theories on wealth distribution could ever become policy.