During the "Great Transformation" from 1760 to 1840, human society largely abandoned public displays of torture, punishment and overt surveillance and adopted more subversive forms of surveillance that are more difficult to detect.
Although never built, Bentham's Panopticon included a tower housing supervisors with a ring of cells housing inmates surrounding it. One unique aspect of the Panopticon is that one can see out of the tower but cannot see into it from the ring, and one can see into the ring but cannot see out from it. The basic purpose of the Panopticon is to enclose and discipline any group that requires supervision. In effect, one can constantly see any and all aspects of those in the ring of cells without ever coming into contact with them and without their knowledge.
According to Foucault, "this invisibility is a guarantee of order."
The invisible watcher and consistent isolation are the key concepts of the Panopticon. By isolating those under surveillance completely, no matter what type of group is being supervised, a number of negative effects can be avoided. Without contact with others, convicts cannot plot escapes, prison riots, or future crimes; patients cannot spread contagious diseases; nor can schoolchildren cheat, copy or waste time. Essentially, by eliminating any and all contact with others, each inmate must focus on the task at hand since any