In recent years economists have begun to use the techniques of non-linear dynamics to show that some apparently erratic and turbulent economic phenomena reflect subtle underlying patterns. How do cyclic and chaotic dynamics arise in economic models of equilibrium? How can empirical methods be...

Our purpose here is to describe and illustrate in the simplest possible way a multiple-phase theory of economic growth and development that helps explain why human evolution has not been characterized by steady progress but by fluctuating growth and changing forms, sometimes progressing to...