The crowd is a state of mind which permeates society and its individuals at almost all times. What becomes articulate in times of stress under great excitement is present in the mind of the individual at most times and explains in part why popular opinion is so positive and so intolerant of contrary points of view. The college professor in his study on a peaceful summer day is just as likely to be reacting as a unit of a crowd-mind, as any member of a lynching party in Texas or Georgia. Mr. Trotter in his book, “Instincts of the Herd in Peace and War,”[15] gives us further material for study. He discusses the underlying causes and results of “herd” tendencies, stressing the herd’s cohesiveness. The tendency the group has to standardize the habits of individuals and to assign logical reasons for them is an important factor in the work of the public relations counsel. The predominant point of view, according to Mr. Trotter, which translates a rationalized point of view into an axiomatic truth, arises and derives its strength from the fact that it enlists herd support for the point of view of the individual. This explains why it is so easy to popularize many ideas. “The cardinal quality of the herd is homogeneity.”[16] The biological significance of homogeneity lies in its survival value. The wolf pack is many times as strong as the combined strength of each of its individual members. These results of homogeneity have created the “herd” point of view. One of the psychological results of homogeneity is the fact that physical loneliness is a real terror to the gregarious animal, and that association with the herd causes a feeling of security. In man this fear of loneliness creates a desire for identification with the herd in matters of opinion. It is here, says Mr. Trotter,[17] that we find “the ineradicable impulse mankind has always displayed towards segregation into classes. Each one of us in his opinions and his conduct, in matters of amusement, religion, and politics, is compelled to obtain the support of a class, of a herd within the herd.” Says Mr. Trotter:[18] “The effect of it will clearly be to make acceptable those suggestions which come from the herd, and those only. It is of especial importance to note that this suggestibility is not general, and it is only herd suggestions which are rendered acceptable by the action of instinct, and man is, for example, notoriously insensitive to the suggestions of experience. The history of what is rather grandiosely called human progress everywhere illustrates this. If we look back upon the developments of some such thing as the steam engine, we cannot fail to be struck by the extreme obviousness of each advance, and how obstinately it was refused assimilation until the machine almost invented itself.”