The utilization of this characteristic of society was shown recently in the activities of a silk firm which desired to intensify the interest of the public in silks. It realized that fundamentally women were its potential buying public, but it understood, too, that the women who made up this public were members of other groups as well. Thus, to the members of women’s clubs, silk was projected as the embodiment of fashion. To those women who visited museums, silk was displayed there as art. To the schools in the same town, perhaps, silk became a lesson in the natural history of the silkworm. To art clubs, silk became color and design. To newspapers, the events that transpired in the silk mills became news matters of importance. Each group of women was appealed to on the basis of its greatest interest. The school teacher was appealed to in the schoolroom as an educator, and after school hours as a member of a women’s club. She read the advertisements about silk as a woman reader of the newspapers, and as a member of the women’s group which visited the museums, saw the silk there. The woman who stayed at home was brought into contact with the silk through her child. All these groups made up the potential market for silk, reached in this way in terms of many appeals to each individual. These are the implications present for the public relations counsel, who must take into account the interchange and interplay of groups in pleading his cause. For society, the interesting outcome of this situation is that progress seldom occurs through the abrupt expulsion by a group of its old ideas in favor of new ideas, but rather through the rearrangement of the thought of the individuals in these groups with respect to each other and with respect to the entire membership of society. It is precisely this interlapping of groups--the variety, the inconsistency of the average man’s mental, social and psychological commitments which makes possible the gradual change from one state of affairs or from one state of mind to another. Few people are life members of one group and of one group only. The ordinary person is a very temporary member of a great number of groups. This is one of the most powerful forces making for progress in society because it makes for receptivity and open-mindedness. The modification which results from the inconstancy of individual commitments may be accelerated and directed by conscious effort. These changes which come about so stealthily that they remain unobserved in society until long after they have taken place, can be made to yield results in chosen directions. Changed external conditions must be taken into account by the public relations counsel in his work.