This article does a fascinating job of evaluating what the author calls “common knowledge,” similar to the TOK concept of shared knowledge, as a way to discuss the general idea of the role of communities in forming beliefs and how modern technologies change the nature of common knowledge.
It’s only with the growth of communities of people interacting that most people gain such courage in their convictions to defy that which authoritative sources (media, political, corporate) deem to be acceptable narratives and acceptable norms. These communities generate more than validation of one’s preexisting beliefs. They generate the common knowledge that I know that many others feel the same as I do, others to whom I am joined in a community.
The Bloodsport of the Hive Mind: Common Knowledge in the Age of Many-to-Many Broadcast Networks