The Sietch was the typical unit of the Fremen culture and the core of their society. Many sietches existed on Arrakis, and one was capable of containing thousands of people. The sietches did not have a close contact and each individual did not care about how many other sietches besides his, existed. Ingslei ascribes the term to the language Tamashek of Salusa Secundus. The Fremen authority system was transformed utterly under the absolute rulership of Paul Atreides and the Regency that followed.