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."<p>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.