The term "cog," denoting a tooth on a wheel or gear, has been used both metaphorically and literally in literature to examine themes of mechanical function, human role, and societal organization. Authors such as Richard Jefferies reflect on the mind's vastness in contrast to a cog's precision, while Gerald Stanley Lee portrays the metaphor as an appreciation of individual contribution to collective advancement.
Edwin Lefevre contrasts the mechanistic "cog" with the integrated self, and F. Anstey employs "Coggs" as a character representing social mockery. From technical explanations of gears to philosophical reflections on human agency, the idea of a cog highlights a conflict between individuality and systemic reliance, as observed in works spanning patent manuals to social critique.