Pareidolia is the experience of “seeing” something in a stimulus that’s simply vague and random.

You’ve felt it if you’ve ever seen images of animals or faces in clouds, or the man in the moon, or heard messages when records are played in reverse. It’s the basis for the Rorschach inkblot test.

This is a portrait of Elizabeth II as it appeared on the 1954 series Canadian dollar bill. So many people thought they saw the face of the devil in the queen’s hair that the bills were eventually withdrawn from circulation.

There’s nothing there — the portrait was adapted from a photograph.