Kenneth Rogoff, a professor at Harvard University, says central bankers should've been more aggressive during the financial crisis and that India's demonetization was done too quickly. Prior to that, Kathy Matsui, chief Japan equity strategist at Goldman Sachs Japan, says Japanese companies are strong. Robert Shiller, a professor at Yale University, says New York City housing is more affordable than people think. Finally, New Orleans Mayor Mitch Landrieu says Washington's stuck making the same mistakes in health care.