Filmmaker Nicholas de Pencier and Bill Marczak, senior research fellow at Citizen Lab, on the documentary, “Black Code." Angelos Chaniotis and Alexander Nehamas explore the Onassis Cultural Center exhibit "A World of Emotions: Ancient Greece, 700 B.C. – 200 A.D." The Museum of Modern Art's Barry Bergdoll and Jennifer Gray discuss a new exhibit celebrating the work of Frank Lloyd Wright. Alexander Todorov, professor of psychology at Princeton University, explores why we have evolved to rely on first impressions to make judgments about a person's character.