Indeed. The title of the post made me think of one of the posters the Isaac Newton Institute for Mathematical Sciences produced to go on the London Underground

Indeed. The title of the post made me think of one of the posters the Isaac Newton Institute for Mathematical Sciences produced to go on the London Underground in 2000: http://www-old.newton.ac.uk/wmy2kposters/april/index.html http://www-old.newton.ac.uk/wmy2kposters/april/index.html