Book excerpt: Shortly before the Soviet invasion of Afghanistan, David Chaffetz and a fellow American student slipped from the protection of Western culture and immersed themselves in the customs, fears, and hopes of the Afghan people, setting out on horseback through the mountains and into a lonely, hermetic world of nomads and isolated villages. Chaffetz's vivid, honest, and often poignant account of their experience reveals a great deal about the people of Afghanistan-and Willard Wood, his traveling companion, contributes a foreword considering the experience of the Afghan people in the new light of autumn, 2001.