In addition to the reputation of keeping bad company, efficiency has to bear the odium of many foolish and inefficient deeds performed by its self-appointed prophets. The quest for efficiency has called forth in business a new functionary known as the "efficiency expert." Many of these men have done a vast amount of valuable work, but many others have not. While the real expert has been raising the level of business organization, the others have been piling up a large wastage of poor work and lost confidence. But these are side issues. The main fact stands out above them. We have been steadily adding to the burdens on industrial and commercial equipment; even more have we increased the stresses and the strains on human life. A devastating war is now suddenly taking up the slack, and the slow and painful task of making the world efficient must be hastened in order that society may bear the load. In these circumstances we need not apologize for making efficiency the main support of business standards. Nor need we assume, as does the author just cited, that the efficiency ideal in any way conflicts with the ideal of moral responsibility and service. Of course, if we reflect, the abstract and impersonal thing which engineers define as the ratio between energy expended and result obtained has no moral quality in itself. Whatever of morality or lack of morality the word "efficiency" calls forth is given to it by the manner in which the terms of the ratio are defined. It is for society to make the definitions. Society may determine the forms and the limitations under which it will have business energy expended, and it may decide what are the social ends toward which it will have business effort contribute. Guided by wise social policy, efficiency and service go hand in hand. Since business is subject to control by society, it follows that the efficiency factors in a particular business, in a whole industry, or in business generally, must adjust themselves to the decisions that society has made, and they must also take account of decisions that it may make in the future. And these decisions are not all recorded in the law or even in the vague thing we call public opinion. Laws and opinions of particular groups, group morality, individual morality, even inertia, and a long list of more subtle and often capricious reactions are channels through which social purpose finds expression.