PROFESSOR LARRY GOPNIK, *speaking as he writes on chalkboard: …X* squared, so that delta *X* equals the square root of .077 *A* squared minus zero, from which we derive the square root of .077 *A* squared…And also, the uncertainty in *P* is equal to the square root of bracket *P* squared minus bracket *P* squared, which also equals the square root of *H* over *A* squared. Which lets us delta *X*, delta *P* equals the square root of .077 *A* squared, *H* over *A* squared, and 1.74 *H* bar.

Okay? The *Uncertainty Principle!*…It proves we *can’t ever really know what’s going on*.

*[schoolbell rings, students scatter]*

…But even though you can’t figure anything out, *YOU WILL BE RESPONSIBLE FOR IT ON THE MIDTERM!*

From Joel Coen and Ethan Coen’s *A Serious Man* (2009)

Related: The Intellectual’s Vice