Ronald Burt is the Hobart W. Williams Professor of Sociology and Strategy at the University of Chicago Booth School of Business. He studies the social structure of competitive advantage in careers, organizations, and markets. He is the author of Structural Holes: The Social Structure of Competition, (Harvard University Press, 1992) and Brokerage and Closure: An Introduction to Social Capital, (Oxford University Press, 2005). He earned a bachelor's degree in social and behavioral science from Johns Hopkins University in 1971, a master's degree in sociology from the State University of New York at Albany in 1973, and a PhD in sociology from the University of Chicago in 1977. He has been on the faculty at INSEAD, Columbia University, SUNY at Albany, and the University of California at Berkeley. He took a leave of absence from Chicago to work at Raytheon Company as the Vice President of Strategic Learning.