Foundationalism and distinct. Geometrical truths are also certain and indubitable; Descartes thus attempted to find truths which were clear and distinct because they would be indubitably true and a suitable foundation for knowledge. His method was to question all of his beliefs until he reached something clear and distinct that was indubitably true. The result was his "cogito ergo sum" – 'I think therefore I am', or the belief that he was thinking – as his indubitable belief suitable as a foundation for knowledge. This resolved Descartes' problem of the Evil Demon – the possibility that he was being deceived by
Ergo Proxy to steal the spotlight from Vincent. This gave them the opportunity to split the narrative between the two characters instead of having a single protagonist lead the story. In Japan, "Ergo Proxy" aired on pay-TV satellite broadcasting network WOWOW from 25 February 2006, concluding on August 12, 2006. "Ergo Proxy" was then released by Geneon Entertainment onto nine DVD volumes from May 25, 2006 to January 25, 2007. The series was licensed by Geneon Entertainment USA for Region 1 release, which began on November 21, 2006 and spanned six volumes. The English dub of "Ergo Proxy" premiered on Fuse TV