Michel Foucault
Foucault begins with a description of measures to be taken against the  plague in the seventeenth century: partitioning of space and closing off  houses, constant inspection and registration. Processes of quarantine  and purification operate. The plague is met by order. Lepers were also  separated from society, but the aim behind this was to create a pure  community. The plague measures aim at a disciplined community. The  plague stands as an image against which the idea of discipline was  created. The existence of a whole set of techniques and institutions for  measuring and supervising abnormal beings brings into play the  disciplinary mechanisms created by the fear of the plague. All modern  mechanisms for controlling abnormal individuals derive from these.
Foucault then discusses Jeremy Bentham's Panopticon, a building with a  tower at the center from which it is possible to see each cell in which a  prisoner or schoolboy is incarcerated. Visibility is a trap. Each  individual is seen but cannot communicate with the warders or other  prisoners. The crowd is abolished. The panopticon induces a sense of  permanent visibility that ensures the functioning of power. Bentham  decreed that power should be visible yet unverifiable. The prisoner can  always see the tower but never knows from where he is being observed.
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