According to Foucault, the dynamics of the Panopticon bore an uncanny resemblance to how people self-monitor in society at large. In the presence of ever-watchful witnesses, he said, physical coercion is no longer necessary. People police themselves. They do not know what the observers are registering at any given moment, what they are looking for, exactly, or what the punishments are for disobedience. But the imagination keeps them pliant. In these circumstances, Foucault claimed, the architecture of surveillances become perniciously subtle and seamless, so ‘light’ as to be scarcely noticeable.