special issue: Variety, growth and demand

摘要: A dynamic model of demand compatible with a changing composition the economic system is presented in this paper. Consumers are not expected to have completely formed preferences for radically new objects consumption. adopt goods or services ,created by innovation, only if three barriers overcome: 1) critical (minimum) level income, 2) human capital, 3) fitness. However, even good service fitness higher than that pre-existing ones, will be immediately adopted. Consumers'.limited knowledge slow down rate adoption any service.