Public
The situational theory of publics, is about the idea that publics can be used and organized by how much they know (are aware of) their common problem, and how much action the group has taken to resolve that problem.  This theory shows when people communicate ideas and when the ideas are about the people who are important in solving the common problem.  This theory is almost the same as John Dewey's theory of publics and Blumer's theory of publics.