On Friday, January 13, 1882, thirteen men met in New York City as the Thirteen Club; they walked under a ladder, ate lobster salad sculpted into the shape of a coffin, and sat beneath a banner reading morituri te salutamus (“we who are about to die salute you”). The following year, the club’s newsletter gleefully reported that “not a single member is dead.” 

Thomas Jefferson never wrote or said, “I’m a great believer in luck. The harder I work the more I seem to have.” The quip was crafted by San Francisco humorist Coleman Cox for a 1922 collection titled Listen to This.

In July 2003 details leaked of a new venture from the Defense Advanced Research Projects Agency: an online market for financial speculation on possible terrorist attacks, assassinations, and coups. “Futures markets have proven themselves to be good at predicting such things as elections results,” the Defense Department argued. “They are often better than expert opinions.” DARPA—already under fire for its proposed Total Information Awareness program—was forced to abandon the idea.

When Apple released its Shuffle feature for iPods, users were deceived by the true randomness of its playback; songs from the same album or artist were often grouped by chance. Complaints led Steve Jobs to alter the device’s programming and begin offering Smart Shuffle, which allowed users to adjust the likelihood of hearing similar songs in a row. “We’re making it less random,” he said, “to make it feel more random.”

According to Pliny, after an oracle predicted Aeschylus would die from being hit by a falling house, the poet began “trusting himself only under the canopy of the heavens.” His precaution was futile; he was killed that day when hit by a tortoise dropped from the sky by a hungry eagle eager to crack open its shell.

It’s considered bad luck in parts of Mississippi for mourners to call a coffin pretty.