Penrose's diagrammatic tensor notation, introduced in "The Road to Reality," is not widely adopted in mathematics due to its complexity and challenges in typesetting and quality assurance. While some physicists, like Cvitanović with his "bird tracks," have developed similar representations, mathematicians generally prefer to avoid coordinate systems. The discussion highlights a divide between mathematicians and physicists regarding the use of coordinates, with mathematicians often favoring abstract tensor notation that does not rely on specific coordinates. Despite its cleverness, Penrose's notation is considered impractical for mathematicians, who typically opt for more conventional representations. Overall, the diagrammatic approach remains largely underutilized in mathematical contexts.