Quote: "The ratio between a circle’s circumference and its di- ameter, named π, is a mathematical constant of crucial importance to science, yet most scientists

Quote: "The ratio between a circle’s circumference and its di- ameter, named π, is a mathematical constant of crucial importance to science, yet most scientists rely on pre- computed approximations of π for their research. This is problematic, because scientific progress relies on infor- mation that will very likely disappear in case of a cata- clysmic event, such as a zombie apocalypse." Easily solved, no shotgun required: divide the path geometry of a walking zombie by that of a non-zombie, relying on the observation that zombies tend to walk in circles and non-zombies don't.