Marshall McLuhan’s concept of “narcissus narcosis” is one of the most intriguing and cautionary ideas in his media theory, particularly as outlined in his 1964 book Understanding Media: The Extensions of Man. Drawing from the Greek myth of Narcissus—a beautiful youth who falls in love with his own reflection in a pool of water, mistaking it for another being—McLuhan uses this metaphor to describe a psychological and perceptual state induced by media technologies.
