The significance of this fundamental epistemological difference becomes clear if we realize that the practical utilization of the teachings of economics presupposes their endorsement by public opinion. In the market economy the realization of technological innovations does not require anything more than the cognizance of their reasonableness by one or a few enlightened spirits. No dullness and clumsiness on the part of the masses can stop the pioneers of improvement. There is no need for them to win the approval of inert people beforehand.

The masses, the hosts of common men, do not conceive any ideas, sound or unsound. They only choose between the ideologies developed by the intellectual leaders of mankind. But their choice is final and determines the course of events. If they prefer bad doctrines, nothing can prevent disaster.

The interventionist policies as practiced for many decades by all governments of the capitalistic West have brought about all those effects which the economists predicted. There are wars and civil wars, ruthless oppression of the masses by clusters of self-appointed dictators, economic depressions, mass unemployment, capital consumption, famines.

The idea underlying all interventionist policies is that the higher income and wealth of the more affluent part of the population is a fund which can be freely used for the improvement of the conditions of the less prosperous. The essence of the interventionist policy is to take from one group to give to another. It is confiscation and distribution. Every measure is ultimately justified by declaring that it is fair to curb the rich for the benefit of the poor.

The interventionist interlude must come to an end because interventionism cannot lead to a permanent system of social organization. The reasons are threefold.

First: Restrictive measures always restrict output and the amount of goods available for consumption. Whatever arguments may be advanced in favor of definite restrictions and prohibitions, such measures in themselves can never constitute a system of social production.

The vague notion of security which the welfare doctrinaires have in mind when complaining about insecurity refers to something like a warrant by means of which society guarantees to everybody, irrespective of his achievements, a standard of living which he considers satisfactory.

In one respect at least present-day welfare propagandists are superior to most of the older schools of socialists and reformers. They no longer stress a concept of social justice with whose arbitrary precepts men should comply however disastrous the consequences may be. They endorse the utilitarian point of view. They do not oppose the principle that the only standard for appreciating social systems is judging them with regard to their ability to realize the ends sought by acting men.