It may certainly be agreed that this social philosophy which we have already said is best characterized as "economic determinism," is the logically necessary foundation of economic socialism. If the change of the economic or industrial order of human society is going to work such wonders as the socialists claim, then it must follow that the economic element is the fundamental and determining element in the social life. If what is wrong with human society is chiefly wrong economic conditions, then the changing of those conditions should, of course, change the whole social superstructure. It would seem, therefore, that the dominantly economic program of Marxian socialists must stand or fall with the economic interpretation of social organization and evolution which Marx proposed. If it can be shown that Marx's philosophy of human society is essentially unsound, then the proposition to regenerate human society simply by economic reorganization is also unsound. Let us see whether the positions of the economic socialists are tenable in the light of the sociological principles which have been emphasized in the previous chapters of this book. Criticism of Marxian Socialism.--The student has already been told that human society is a complex of living organisms, responding now this way, now that, to external stimuli in the environment. These stimuli in the environment we have roughly, but inaccurately, spoken of as causes, though they are not causes in a mechanical sense. The responses which are given to these stimuli by individuals and groups vary greatly according to heredity, instincts, and habits,--the inner nature, in other words, of the organisms composing society. Now, the stimuli in the environment which give rise to the activities of individuals and societies, though not in any mechanical way, may be classified into several great groups, such as the economic, the reproductive, the political, the religious, and so on. The economic stimuli would be those that have to do with the processes of production, distribution, and consumption of wealth; that is, the economic stimuli are those which are concerned with economic values. Now, while the student has not been even introduced to the psychological theory of human society, he perhaps knows enough of individual human nature to see that there is no reason in the nature of things why one's responses to economic stimuli, those connected with economic values, should determine his response to all other stimuli; and this is what scientific sociology and scientific psychology exactly find; namely, that there is no reason for believing that economic stimuli determine in any exact way or to any such extent, as Marx thought, responses to other stimuli. It is true that our habits of response to a certain class of stimuli affect to a certain extent our habits of response to all other classes. Thus it follows that the economic phase of human society affects to a very great degree all other