A democracy falters when most of its citizens are uninformed or misinformed, when misinformation affects political decisions and actions, or when political actors foment misinformation—the state of affairs the United States faces today, as this timely book makes painfully clear. In Do Facts Matter? Jennifer L. Hochschild and Katherine Levine Einstein start with Thomas Jefferson’s ideal citizen, who knows and uses correct information to make policy or political choices. What, then, the authors ask, are the consequences if citizens are informed but do not act on their knowledge? More serious, what if they do act, but on incorrect information? Jennifer Hochschild is the Henry LaBarre Jayne Professor of Government at Harvard University, Professor of African and African American Studies, and Harvard College Professor.