High Quality Content by WIKIPEDIA articles! Generations (ISBN 0-688-11912-3) (1991) is the first book by William Strauss and Neil Howe that describes a cyclical theory of history based on repeating generational archetypes. It examines Anglo-American history by dividing it into saecula, or seasonal cycles of history. A saeculum is about 90 years long - the length of a long human life - and is further divided into four "Turnings" that are about 22 years long - as long as the period between birth and adulthood. Children raised during a particular Turning share similar historical and cultural experiences, resulting in distinct generational types. The book suggests that interactions between generations explains why major crises occur roughly every 90 years (e.g. 1773 - 1861) and why spiritual awakenings similarly recur halfway between those crises. Данное издание представляет собой компиляцию сведений, находящихся в свободном доступе в среде Интернет в целом, и в информационном сетевом...