In a 1961 paper, this person developed a thought experiment about people preferring known over unknown risks when wagering on the colors of balls drawn from two urns, forming a bias termed “ambiguity aversion.” This person was inspired by a speech given at Haverford College by pacifist activist Randy Kehler. Senator Mike Gravel supported this person by entering documents into the public record. In addition to their Watergate (10[1])shenanigans, G. Gordon (10[2])Liddy and (10[2])E. Howard Hunt broke into (10[1])the office of this person’s (*) psychiatrist. Along with his friend Anthony Russo, (10[1])this man was acquitted (10[1])of charges filed under the Espionage Act after he photocopied documents revealing (10[1])the truth of the Vietnam (10[2])War. For (10[2])10 points, (10[1])name this (10[1])whistleblower (-5[1])who leaked the Pentagon Papers. (10[1]-5[1])■END■