all basic needs, for additional goods Urban society (a movement away from rural countrysides to the cities) 6 Beyond consumption (The search for quality) age of diminishing relative marginal utility as well as an age for durable consumer goods large families and Americans feel as if they were born into a society that has high economic security and high consumption a stage where it's merely speculation on whether there is further consumer diffusion or what the new generation will bring for growth Rostow claimed that these stages of growth were designed to tackle a number of issues, some of which he identified himself, writing: "Under what impulses did traditional, agricultural societies begin the process of their modernization? When and how did regular growth become a built-in feature of each society? What forces drove the process of sustained growth along and determined its contours? What common social and political features of the growth process may be discerned at each stage? What forces have determined relations between the more developed and less developed areas; and what relation if any did the relative sequence of growth bear to outbreak of war? And finally where is compound interest taking us? Is it taking us to communism; or to the affluent suburbs, nicely rounded out with social overhead capital; to destruction; to the moon; or where?" Rostow asserts that countries go through each of these stages fairly linearly, and set out a number of conditions that were likely to occur in investment, consumption, and social trends at each state. Not all of the conditions were certain to occur at each stage, however, and the stages and transition periods may occur at varying lengths from country to country, and even from region to region. Theoretical framework Rostow's model is a part of the liberal school of economics, laying emphasis on the efficacy of modern concepts of free trade and the ideas of Adam Smith. It disagrees with Friedrich List's argument which states that economies which rely on exports of raw materials may get "locked in", and would not be able to diversify, regarding this Rostow's model states that economies may need to depend on raw material exports to finance the development of industrial sector which has not yet of achieved superior level of the competitiveness in the early stages of take-off. Rostow's model does not disagree with John Maynard Keynes regarding the importance of government control