> Perhaps fortunately, this model has only ever been used in one real prison in Cuba - slight aside, Fidel Castro and his brother Raul were actually imprisoned

> Perhaps fortunately, this model has only ever been used in one real prison in Cuba - slight aside, Fidel Castro and his brother Raul were actually imprisoned here for a period of time. The Panopticon isn't necessary in modern jails since CCTVs are cheap and installable everywhere.