IN his opus The Wealth of Nations published in 1776 Adam Smith drew a distinction between the progressive state, the stationary state and the declining state. The progressive state was one where capital accumulation would be occurring at a rate faster than the growth of population, because of which wages would be high and population growing; in a declining state by contrast the opposite happened, while in a stationary state the capital stock and the population, and hence the labour force, was constant and so were the wages, but at a level lower than in the progressive state.