complexity, got a BS and MS in physics in 1951, studying under Rudolf Carnap. In economics, notable Nobel Memorial Prize in Economic Sciences winners Milton Friedman, a major advisor to Republican U.S. president Ronald Reagan, Conservative British prime minister Margaret Thatcher and Chilean military dictator Augusto Pinochet, George Stigler, Nobel laureate and proponent of regulatory capture theory, Herbert A. Simon, responsible for the modern interpretation of the concept of organizational decision-making, Paul Samuelson, the first American to win the Nobel Memorial Prize in Economic Sciences, and Eugene Fama, known for his work on portfolio theory, asset pricing and stock market behavior, are all graduates. American economist, social theorist, political philosopher, and author Thomas Sowell is also an alumnus. Brazil's minister of the economy Paulo Guedes received his Ph.D. from UChicago in 1978. Other prominent alumni include anthropologists David Graeber and Donald Johanson, who is best known for discovering the fossil of a female hominid australopithecine known as "Lucy" in the Afar Triangle region, psychologist John B. Watson, American psychologist who established the psychological school of behaviorism, communication theorist Harold Innis, political theorist Anne Norton, chess grandmaster Samuel Reshevsky, and conservative international relations scholar and White House coordinator of security planning for the National Security Council Samuel P. Huntington. American Civil Rights Movement leaders Vernon Johns, considered by some to be the founder of the American Civil Rights Movement, American educator, socialist and cofounder of the Highlander Folk School Myles Horton, civil rights attorney and chairman of the Fair Employment Practices Committee Earl B. Dickerson, Tuskegee Airmen commander Benjamin O. Davis, Jr., African-American history scholar and journalist Carter G. Woodson, and Nubian scholar Solange Ashby are all alumni. Three students from the university have been prosecuted in notable court cases: the infamous thrill killers Nathan Leopold and Richard Loeb and high school science teacher John T. Scopes who was tried in the Scopes Monkey Trial for teaching evolution. Faculty Notable faculty in economics include Friedrich Hayek, Frank Knight, Milton Friedman, George Stigler, James Heckman, Gary Becker, Robert Fogel, Robert Lucas, Jr., John A. List, and Eugene Fama. Additionally, the John Bates Clark Medal, which is rewarded annually to the best economist under the age of 40, has also been awarded to 4 current members of the university faculty. Notable faculty in physics have included the speed of light calculator A. A. Michelson, elementary charge calculator Robert A. Millikan, discoverer of the