According to William Strauss and Neil Howe, the history of America can be seen as a series of generational biographies that span from 1584 to the present day’s youth. Their audacious hypothesis states that each generation fits into one of four categories, and that these types recur one after the other in a set order. A cycle of spiritual awakenings and secular crises has occurred throughout American history, from the founding colonists to the present and well into this millennium, as shown by the Generations vision.