1. The Nature of Dynamic Forces

The idea of a stationary state is an aid to theoretical speculation. In the world of reality there is no stationary state, for the conditions under which economic activity takes place are subject to perpetual alterations which it is beyond human capacity to limit.

The influences which maintain this perpetual change in the economic system can be grouped into six great classes. First and foremost come changes in external Nature. Under this heading must be classified not only all those changes in climate and other specifically natural conditions which take place independent of human actions, but also changes arising from operations carried out within these conditions, such as exhaustion of the soil, or consumption of standing timber, or mineral deposits. Secondly come changes in the quantity and quality of the population, then changes in the quantity and quality of capital goods, then changes in the technique of production, then changes in the organization of labour, and finally changes in demand.1

Of all these causes of change the first is the most fundamentally important. For the sake of argument let us assume that a socialist community might be able so to regulate the growth of population and demand for commodities as to avert danger to the economic equilibrium from these factors. Were that so there are other causes of change that could be avoided. But the socialist community would never be able to influence the natural conditions of economic activity. Nature does not adapt itself to man. Man must adapt himself to Nature. Even the socialist community will have to reckon with changes in external nature; it will have to take account of the consequences of elemental disturbances. It will have to take account of the fact that the natural powers and resources at its disposal are not inexhaustible. Disturbances from without will intrude on its peaceful running. No more than Capitalism will it be able to remain stationary.