Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Mankind in Transition is a book by Masse Bloomfield. He describes human evolutionary history as a step function of punctuated equilibrium, with long periods of stability interrupted with short periods of transition. He argues that humans are now in a period of transition from a stable agricultural society through a transitional industrial and/or information society becoming a stable automated society. Each stable society has its own social organization. The animal society has a dominant male and everyone else; the tribal society has a chief, a medicine man, hunters and everyone else. The peasant society has a nobility, overseers and peasants in the food production category which also has a military category, a religious category, tradesmen and craftsmen. The transitional industrial society features top executives, managers and workers in many categories.