Common superstitions: Black cats are bad omens
The backstory: Despite centuries of royal treatment (Egyptians worshipped them; the Norse goddess Freya rode in a chariot pulled by them), cats took a big hit to their reputation in the 1200s, when Pope Gregory IX, waging a culture war on pagan symbols, damned cats as servants of Satan. As a result, cats—especially black ones—were killed across Europe. One unintended consequence, according to some historians: The cat-deprived continent may have allowed disease-carrying rodents to flourish and spread the bubonic plague of 1348. Rumours that the feline’s fangs and fur were venomous persisted, and by the witch-hunting days of the 1600s, many Puritans believed black cats to be “familiars”—supernatural demons that serve witches—and avoided them (to borrow an apt phrase) like the plague.
Plus: 8 Reasons You Should Never Let Your Cat Sleep in Your Bed
Common superstitions: Never walk under a ladder
The backstory: Depending on your background, a ladder leaning against a wall can represent an honest day’s work, a textbook geometry problem, or a symbol of the Holy Trinity that, if breached, will damn your soul. That last bit is what some ancient Christians believed—that any triangle represented the Trinity, and disrupting one could summon the Evil One. These days, our under-ladder phobia is a smidge more practical: Avoid it because you might get beaned by falling tools, debris, or an even less lucky human.
Here are five popular myths about history—and why they’re absolutely false.
Common superstitions: Break a mirror and see seven years of bad luck
The backstory: Numerous ancient cultures agree: Your reflection doesn’t just reveal whether you’re having a bad hair day—it also holds a piece of your soul. To break a mirror, then, is to fracture your very essence, leaving you vulnerable to bad luck. So why should the sentence last seven years? Some writers cite the ancient Romans, who are said to have believed that the human body and soul fully regenerate every seven years. Any poor pleb who fractured his or her soul in the looking glass would therefore have to endure the bad karma until the soul renewed again.
Plus: 12 of the Most Fascinating Good Luck Charms from Around the World
Common superstitions: A full moon brings out the crazies
The backstory: Ever wonder where the word lunatic came from? Look no further than luna, the Latin word for the moon. Many Greeks knew that the moon and its goddess, Luna, held the tides in their thrall, and Aristotle considered the human brain—the “moistest” organ—particularly susceptible to Luna’s pull. Ancient physician Hippocrates agreed, writing, “One who is seized with terror, fright, and madness during the night is being visited by the goddess of the moon.” Today, some emergency room workers still believe the full moon means trouble.
Here are six facts that will make you look at the moon a little differently.
Common superstitions: Say “God bless you” after a sneeze or risk something worse than a cold
The backstory: You’ve probably heard the myth that a sneeze stops the heart (it doesn’t) or separates body from soul (science declines to comment there). But to explain the ritual of post-sneeze “blessing,” we can look to another pope. During the first recorded plague pandemic, in the sixth century, severe sneezing often portended sudden death. As a desperate precaution, Pope Gregory I supposedly asked followers to say “God bless you” every time someone sneezed. Today, it’s just polite.
Plus: 17 Forgotten Manners Every Parent Should Teach Their Child