Alumni got a taste of one of Princeton’s most unusual freshman seminars: “The Art and Science of Motorcycle Design,” in which students overhauled a 1963 Triumph Tiger Cub. Alumni were not able to take the bike for a spin, though Michael Littman, the professor of mechanical and aerospace engineering who taught the course, said he was “happy to report that I talked Risk Management into ­letting ­students get on the motorcycle.” Elisabeth Rodgers ’86, left, seemed to enjoy the bike nonetheless.