“The most effective teachers help students keep the larger questions of the course constantly at the forefront. Donald Saari... invokes the principle of what he calls “WGAD”—“Who gives a damn?” ...He tells his students that they are free to ask him this question on any day during the course, at any moment in class. He will stop and explain... why the material... is important, and how it relates to the larger questions and issues of the course.”