Economist Abhijit Vinayak Banerjee was in Calcutta recently. The Ford Foundation International Professor of Economics at the Massachusetts Institute of Technology gave a talk on his book Poor Economics - co-authored with fellow MIT professor Esther Duflo - at a programme in Bengal Club in association with The Telegraph. Before the talk, the economist spoke to Devadeep Purohit about the book and some of the contemporary economic issues.Â