While the rebels in the present college generation raised their voices and their barricades, men and women of earlier generations traveled back to campuses to raise their glasses in that long-standing late spring rite, the class reunion. Most lavish of reunions is the 25th, and nowhere is it staged with such flourish as at Harvard. This year’s 25th brought back to Cambridge nearly 500 Harvard men of the class of 1943, men (and wives) of that “middle generation” whom Richard Poirier addresses earlier in these pages. The Atlantic invited Nicholas von Hoffman, author and reporter for the Washington Post, to cast an anthropological eye on the event. Fresh from a field trip into hippieland, which provoked his recently published book, We Are the People Our Parents Warned Us Against, Mr. von Hoffman did not have to look hard to find the generation gap; it yawned before him.