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 (15[1])aversion.” This person was inspired by a speech given at Haverford College by pacifist activist Randy Kehler. Senator Mike Gravel supported this person (15[1])by entering documents into the public record. In addition to their Watergate shenanigans, G. Gordon Liddy and E. Howard Hunt broke into the office of this person’s (*) psychiatrist. Along with his friend Anthony Russo, this man was acquitted of charges filed under the Espionage Act after (10[1])he photocopied documents revealing the truth of the Vietnam War. For 10 points, name this whistleblower who leaked the Pentagon Papers. ■END■