In 1975, the economist Milton Friedman gave a series of lectures in Chile, as well as a small amount of advice to Augusto Pinochet, the country’s right-wing dictator. The advice was not on how to best crack down on political dissent, or where to hide the bodies of dissidents you were trying to disappear; it involved economic policy, and was advice that was similar to what he’d have given any government. Nonetheless, Friedman’s left-wing critics somewhat predictably used this brief interlude in a decades-long career to tar him and his ideas.
Whether Friedman should have advised Pinochet has long been a matter of cocktail-party debate in right-wing circles. Is it better for experts to send a message by withholding their expertise? Or if you have good advice to give, is it better to offer it to bad governments -- to benefit their people, even if incidentally the advice benefits the bad governments as well? The utilitarian calculus is, to say the least, unclear.