Panopticon is the third full-length album by American post-metal band Isis, released by Ipecac Recordings on October 19, 2004. The album's title is derived from philosopher Jeremy Bentham's panopticon prison ideal and philosopher/historian Michel Foucault's later allegorical appropriation of the concept. The liner notes also include quotes from technology writer Howard Rheingold and futurist Alex Steffen; as a concept album, Panopticon's focus is on the proliferation of surveillance technologies throughout modern society and the government's role in that spread. Critical response to Panopticon was generally very warm; as it followed 2002's critically acclaimed Oceanic, many reviewers were quick to hold the two in comparison. The consensus was that Panopticon represented a progression, of sorts. The album's sound continued Isis' departure from the structures of sludge and metal – which had been the hallmarks of their earlier material – and continued along the trajectory of post-metal, achieved by heightened use of melody and clean vocals. From Wikipedia (https://en.wikipedia.org/wiki/Panopti...) under Creative Commons Attribution CC-BY-SA 3.0 (https://creativecommons.org/licenses/...)