The article is based on Christian story. Dan Smail is a professor of history at Harvard University argues that historians have failures to acknowledge a revolution which we understand in the short time. The bottom occurred in the middle of nineteenth century, geological and biological evidences for evolution of human beings confided to a community in long chronology. Historians have not abandoned chronological and geographical grip of sacred history. The author is not expecting to suggest fixing textbooks, general histories, and lectures. Instead, his argument is a suggestion to look a big history. Historians mention written history not deep history, hence they are interested in only their field. Also narrative of textbooks and general histories
