In a conference room in Columbia, Md., 78-year-old Edith Seashore sits among 24 young men and women, about half of them U.S. Navy officers or civilian employees working for the Navy. The group, seated in a circle, has come together for a course called “Working with Differences.” Ostensibly focused on diversity, the session is really set up to teach people how to confront the unspoken conflicts, fears, and resentments that make life in organizations painful and unproductive. And as if on cue, right off the bat, two of the participants have gotten into a dispute.