The document summarizes the contrasts between an atheist professor of anthropology and a Christian preacher sitting next to each other on a flight. Some of their key differences included: the atheist believing the world began with a big bang while the preacher said it would end with one, the atheist being interested in the age of rocks while the preacher's interest was in the Rock of Ages (Jesus), and the atheist seeing man creating God versus the preacher's view of God creating man.