Andrew W. Lo is the Charles E. and Susan T. Harris Professor at the MIT Sloan School of Management, director of the MIT Laboratory for Financial Engineering, and an external faculty member at the Santa Fe Institute. His books include Adaptive Markets and Hedge Funds (both Princeton). Shomesh E. Chaudhuri is a cofounder of QLS Advisors. He has published articles in such journals as the Journal of Financial Economics, the Journal of Econometrics, Management Science, JAMA Oncology, and Drug Discovery Today.