Near the University of Bologna—the world’s oldest, founded in 1088—is a medieval museum displaying carved memorial plaques that honor great professors of the past. “They all show the professor on the podium, with the students below,” says Thomas Forrest Kelly, Knafel professor of music. “Often the students are asleep, playing dice or cards, or fornicating.”

Much has changed since the Middle Ages, but one thing that persists is the lecture. The medieval university invented lecturing—the word comes from the Latin verb legere, to read—to cope with the scarcity of books: a lecturer would read the only available copy of a book to the gathering of students. “That was high technology in the thirteenth century,” says Kelly, “but not high technology for the twenty-first century!”

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