To explore economic theory, Ha-Joon Chang (SOAS University of London) uses the histories behind various food items from around the globe, how they are cooked and eaten, and what they mean to different cultures. In his book, Edible Economics: A Hungry Economist Explains the World , he explains how chocolate offers insights into post-industrial knowledge economies, or how okra speaks to capitalism’s complicated relationship with freedom. Chaired by Mehreen Khan ( The Times ). Photo Credit: Bhagesh Sachania Photography