Robin Goldstein is an economist and author of The Wine Trials, the controversial exposé of wine snobbery that became the world's best-selling guide to cheap wine. He is Director of the Cannabis Economics Group in the Department of Agricultural and Resource Economics at the University of California, Davis. He has an AB from Harvard University, a JD from Yale Law School, and a PhD in economics from the University of Bordeaux.

Daniel Sumner is Frank H. Buck, Jr. Distinguished Professor of Agricultural and Resource Economics at the University of California, Davis. He grew up on a California fruit farm, served on the president's Council of Economic Advisers, and was Assistant Secretary of Economics at the US Department of Agriculture before joining the UC Davis faculty. He has a BS from Cal Poly and a PhD in economics from the University of Chicago.