Modernization theory is a sociological theory stating that societies will inevitably change in positive, progressive ways over the course of their existence. The mainstream sociological model of modernization supposes that Western capitalist societies provide the model for modernization. However, some theories, such as Marxist modernization, do not use Western societies or capitalism as a goal. Modernization theory states that all societies progress over time from one stage to another. The ultimate goal of all societies will be to become a modern or post-modern society. The basic stages of modernization theory, as listed by American sociologist W. W. Rostow, are: Tradition, Take-off, Maturation and Mass production/consumption.