This story was originally published on The Conversation. It appears here under a Creative Commons license. Some people fear that breaking a mirror can lead to seven years of misfortune. The history of this superstition may go back to the ancient Greeks and Romans, who ascribed mysterious powers to reflected images. As a scholar of the Indigenous religions of the Americas, I know that the ancient Maya had a different take on cracked mirrors. During the first millennium, the Maya used such mirrors—in cities from southern Mexico to western Honduras—as…