All that human-microphone repeating and hand gestures and quickly making large decisions among thousands of people has some of its roots in the research of an anthropologist who was involved in organizing Occupy Wall Street. From the Chronicle of Higher Education:
It was on this island nation off the coast of Africa that David Graeber, one of the movement's early organizers, who has been called one of its main intellectual sources, spent 20 months between 1989 and 1991. He studied the people of Betafo, a community of descendants of nobles and of slaves, for his 2007 book, Lost People.
Betafo was "a place where the state picked up stakes and left," says Mr. Graeber, an ethnographer, anarchist, and reader in anthropology at the University of London's Goldsmiths campus.
In Betafo he observed what he called "consensus decision-making," where residents made choices in a direct, decentralized way, not through the apparatus of the state. "Basically, people were managing their own affairs autonomously," he says.
The process is what scholars of anarchism call "direct action." For example, instead of petitioning the government to build a well, members of a community might simply build it themselves. It is an example of anarchism's philosophy, or what Mr. Graeber describes as "democracy without a government."