Stenciled on a wall along an outdoor walk on the wall of one of UC Berkeley’s life sciences buildings. Something like this, you’d think if you saw it once on campus you’d see it everywhere. But so far — over the past eight months — it’s shown up in just that one spot.
(Naturally, though, when you start rummaging through Google’s trunk of odds and ends, you find more of the same. For instance, this T-shirt. )