Ann Blair is the Carl H. Pforzheimer University Professor at Harvard University. Paul Duguid is an adjunct full professor in the School of Information at the University of California, Berkeley. Anja-Silvia Goeing is professor of history of education at the University of Zurich and an associate in history at Harvard University. Twitter @debatesovert Anthony Grafton is the Henry Putnam University Professor of History at Princeton University. Twitter @scaliger