"When I started my research career, I was a research assistant working for a handful of economists. One of them was Amitabh Chandra, who showed me a paper he wrote with Katherine Baicker – now the dean at Harris – and Jonathan Skinner about productivity issues in US health care. I remember being stunned by a graph showing that 1-year mortality and costs of hospital treatment for heart attacks were completely uncorrelated. It was unexpected, and I needed to know more."