Hey, It’s Schrodinger’s Cat

It certainly relieves us that the cat in this picture didn’t actually go missing. Apparently, this sign is someone’s idea of a clever joke, and it’s based on a 1935 thought experiment courtesy of Erwin Schrodinger. This sign easily takes credit as one of the wittiest signs we’ve seen so far.

The thought experiment imagined a cat being enclosed in a box together with a radioactive source and poison that’s released when the source emits radiation. Until the box opens and the cat is observed, the cat inside the box is considered to be simultaneously deceased and alive according to quantum mechanics. As we said, it’s a clever joke, but it’s hard to understand it if you haven’t paid attention in class.