Geoffrey Nunberg, a linguist, is a professor at the U.C. Berkeley School of Information. Since 1987, he has done a language feature on NPR’s “Fresh Air,” and his commentaries have appeared in The New York Times and many other publications. His previous books include Talking Right and Going Nucular; his most recent book is Ascent of the A-Word: Assholism, The First Sixty Years. Nunberg lives in San Francisco.