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13 Reasons People Think the Number 13 is Unlucky

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Happy Friday the 13th! Why is the number 13 considered unlucky, anyway? Here are 13 possible reasons.

1. THERE WERE 13 PEOPLE AT THE LAST SUPPER.

And tradition has held that the 13th to take their seat was either Judas or Jesus himself.

2. MANY BELIEVE EITHER THE LAST SUPPER OR THE CRUCIFIXION OCCURRED ON THE 13TH.

One of the great controversies surrounding the Last Supper is whether or not it was a Passover meal. John seems to suggest that the meal was eaten the day before Passover, which has led some scholars to date the Last Supper to the 13th of Nisan (a month on the Jewish calendar), while others say that the crucifixion itself was on the 13th of Nisan.

3. BIBLICAL REFERENCES TO THE NUMBER 13 AREN'T ALL THAT POSITIVE.

According to historian Vincent Foster Hopper, one of the people who really pushed 13 as being unlucky was 16th century numerologist Petrus Bungus. Among his reasons? Hopper says that Bungus "records that the Jews murmured 13 times against God in the exodus from Egypt, that the thirteenth psalm concerns wickedness and corruption, that the circumcision of Israel occurred in the thirteenth year."

4. TRADITIONALLY, THERE WERE 13 STEPS TO THE GALLOWS.

According to popular lore, there are 13 steps leading up to the gallows. Gallows actually varied wildly, but even then, the number was often brought up to 13. A park ranger at Fort Smith Historic Site once said, "[There were] 13 steps on the gallows—12 up, and one down."

5. THE MASS ARREST AND EXECUTION OF THE KNIGHTS TEMPLAR BEGAN ON FRIDAY THE 13TH.

The Knights Templar, who were widely believed to be protecting the Holy Grail (the cup Jesus drank from at the Last Supper) as well as other holy objects, also acted as a bank of sorts to European kings. But after French King Philip IV lost a war with England and became heavily indebted to the Knights, he conspired with Pope Clement V to have all members of the Knights Templar arrested, charged with Satanism and other crimes, and massacred. The roundup of the Knights Templar began in earnest on Friday, October 13, 1307.

6. WOMEN MENSTRUATE ROUGHLY 13 TIMES A YEAR.

Some suggest that the association with 13 being unlucky is due to women generally having around 13 menstrual cycles a year (based on a cycle length of 28 days).

7. A WITCHES' COVEN HAS 13 MEMBERS.

Although a coven is now considered to be any group of witches (or vampires, in some tellings), it was once believed that a coven was made up of exactly 13 members.

8. 13 LETTERS IN A NAME MEANS THE PERSON IS CURSED.

There’s an old superstition that says if you have 13 letters in your name, you’re bound to be cursed. Silly, yes, but slightly more convincing when you consider that a number of notorious murderers' names (Charles Manson, Jack the Ripper, Jeffrey Dahmer, Theodore Bundy, and Albert De Salvo) all contain 13 letters. And, in case you were wondering: Adolf Hitler's baptismal name was Adolfus Hitler [PDF].

9. SUPERSTITION HAS MADE FRIDAY THE 13TH TOUGH FOR BUSINESSES.

Friday the 13th is an expensive day for businesses. One analyst claims that around a billion dollars a year are lost as people choose not to do business of any kind on Friday the 13th.

10. 12 IS A PERFECT NUMBER, SO 13 MUST BE UNLUCKY.

In some schools of numerology, the number 12 is considered to be the representation of perfection and completion. It stands to reason, then, that trying to improve upon perfection by adding a digit is a very bad idea indeed—your greed will be rewarded with bad luck.

11. ZOROASTRIAN TRADITION PREDICTS CHAOS IN THE 13TH MILLENNIUM.

The ancient Persians divided history into four chunks of 3000 years. And although the exact timeframes can vary, some scholars feel that at the beginning of the 13,000th year there will be chaos as evil mounts a great battle against good (although good will eventually triumph).

12. SPORTS GREATS WITH JERSEY NUMBER 13 SOMETIMES COME UP SHORT.

Dan Marino is a constant fixture at or near the top of any "best quarterbacks to never win a Super Bowl" list. Perhaps his failure to grab the biggest prize in football comes down to his jersey number—13. And he's not the only example: Basketball star Steve Nash was a two-time NBA MVP and is considered one of the all-time great point guards, but he and his #13 jersey never won a championship.

13. SUPER BOWL XIII WAS A HUGE FINANCIAL SETBACK FOR SPORTS BOOKIES.

And keeping with sports, 1979's Super Bowl XIII was a particularly bad one for bookies. Called "Black Sunday," it pitted the Dallas Cowboys, the defending champions, against the Pittsburgh Steelers. But as money kept pouring in from Texas and Pennsylvania, the spread kept changing until settling precisely at the game’s actual spread. The losses were legendary.

To counter all of this undue hatred of the poor number 13, here's one reason to love it: a baker’s dozen. Mmm, extra doughnut.

A version of this story ran in 2010.

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18 Smart Products To Help You Kick Off Summer
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Whether you’re trying to spiff up your backyard barbeque or cultivate your green thumb, these summertime gadgets will help you celebrate the season from solstice to the dog days.

1. ROSÉ WINE GLASSES; $60

Rosé Wine Glass
Amazon

Why It’s Cool: Wine not? When the temperature rises and beer isn’t your thing, reach for the rosé. Riedel’s machine-blown SST (see, smell, taste) wine glasses will give the sparkly stuff ample room to breathe, making every refreshing sip worthwhile.

Find It: Amazon

2. NERF N-STRIKE ELITE SURGEFIRE; $25

Nerf SurgeFire
Hasbro

Why It’s Cool: The N-Strike Elite SurgeFire (say that five-times-fast) sports a pump-action rotating drum for maximum foam-based firepower and holds up to 15 Nerf darts in its arsenal.

Find It: Hasbro Toy Shop

3. BUSHEL & BERRY PLANTS; $34

plant
Amazon

Why It’s Cool: You don’t need to have a green thumb to create a brag-worthy garden this summer. Besides producing snackable mid-season berries, these open-growing bushes can be planted immediately for easy set-up to make you look like a botanical pro.

Find It: Amazon

4. INFLATABLE DONUT; $17

Doughnut float
Amazon

Why It’s Cool: When the only dunking you’re doing is taking a dip in the pool, a 48-inch inflatable donut is the perfect way to stay afloat.

Find It: Amazon

5. STAR SPANGLED SPATULA; $21

American flag spatula
Amazon

Why It’s Cool: O say can you see by your grill’s charcoal light / Meats so proudly we cooked ... with a star spangled spatula. Depending on the specific model, these all-American grilling tools (designed in New Jersey and made in Chicago) are made of a combination of walnut and stainless steel or nylon. As an added bonus: 5 percent of the proceeds go to the Penn Abramson Cancer Center.

Find It: Amazon

6. MLB HOT DOG BRANDERS; $8 AND UP

MLB San Diego Padres Hot Dog BBQ Brander
Amazon

Why It’s Cool: Take your hot dogs, sausages, brats, and more out to the ballgame without ever leaving your grill. These branders from Pangea Brands are dishwasher-safe and made of ceramic-coated cast iron.

Find It: Amazon

7. UNA GRILL; $139

grill
MoMA Shop

Why It’s Cool: This portable charcoal-heated grill is as efficient as it is stylish. The compact size lets you cook at the park, after hitting up MoMA, or anywhere in between.

Find It: MoMa Shop

8. HAMBURGER GRILLING BASKET; $21


Why It’s Cool: Made of steel and finished with a non-stick coating, this grilling tool flips four burgers at once and maintains perfect burger proportions to guarantee nobody stays hungry for long.

Find It: Amazon

9. COPPER FIRE PIT; $121

metal fire pit
Amazon

Why It’s Cool: The grill isn’t the only place for a roaring fire this summer. This 100 percent solid copper fire pit makes for the perfect gathering spot at your next BBQ, or just to warm up after a cool summer evening.

Find It: Amazon

10. BENDY STRAW POOL NOODLE FLOAT; $10

Bendy Straw Inflatable Pool Float
Amazon

Why It’s Cool: Inflatable pool floats shouldn’t be boring, and this bendy straw float definitely does not suck. This unique spin on traditional pool noodles is sure to make for some cheesy jokes, but at least you’ll be comfortable floating in the pool or at the beach.

Find It: Amazon

11. GRIDDLER DELUXE; $111

Cuisinart GR-150 Griddler Deluxe
Amazon

Why It’s Cool: If you’re looking for some serious panini power, this griddler offers up a versatile lineup of six cooking options in one. And with dual-zone functions you can sling burgers while searing filets and sautéeing vegetables all at the same time.

Find It: Amazon

12. VINTAGE SNOW CONE MAKER; $30

Vintage Snow Cone Maker
Amazon

Why It’s Cool: With its old-timey design, dual cone shelf, and endless flavor options, this snow cone maker is guaranteed create a cool treat.

Find It: Amazon

13. DACHSHUND CORN ON THE COB HOLDERS; $7

Dog Corn Holders
Amazon

Why It’s Cool: While meat-lovers will inevitably scarf down a lot of hot dogs this summer, vegetarians who happen to love another kind of dog will be smitten with these stainless steel, Dachshund-shaped corn on the cob prongs. They’re a fun spin on a summer grilling favorite.

Find It: Amazon

14. ICE CREAM SANDWICH MAKER; $16

Ice Cream Sandwich Maker
Amazon

Why It’s Cool: Four sandwiches are better than one, especially when they're of the ice cream variety. Make four ice cream sandwiches at once with this homemade spin on a classic cold treat.

Find It: Amazon

15. UE WONDERBOOM; $68

Bluetooth speaker
Amazon

Why It’s Cool: Besides delicious food and great company, some memorable tunes are required for the quintessential barbeque. This portable bluetooth speaker offers up some booming sound in a small package, and with a battery power of 10 hours on a single charge you can keep the party going all night.

Find It: Amazon

16. ROLLORS GAME; $38

Rollors Backyard Game
Amazon

Why It’s Cool: When you’re sick of bocce, hate horseshoes, and you’re over cornhole, you might want to take up “rollors,” a family-friendly game that combines your favorite traditional backyard festivities into one game for people of all ages.

Find It: Amazon

17. HAMMOCK; $174

hammock
Amazon

Why It’s Cool: Rest easy knowing that this 100 percent hand-woven and hand-dyed cotton hammock contributes to artisan job-creation in Thailand.

Find It: Amazon

18. VSSL SURVIVAL ESSENTIALS; $59

Emergency Survival Tent Outdoors
Amazon

Why It’s Cool: Compact, convenient, and durable, the VSSL Shelter can come in handy when things don’t go quite as planned. The device—which features a lightweight emergency shelter all within the handle of a compact, weather-resistant aluminum LED flashlight—is designed to keep you safe under the worst conditions.

Find It: Amazon

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Illustration by Mental Floss. Image: Rischgitz, Getty Images
11 Things You Might Not Know About Johann Sebastian Bach
Illustration by Mental Floss. Image: Rischgitz, Getty Images
Illustration by Mental Floss. Image: Rischgitz, Getty Images

Johann Sebastian Bach is everywhere. Weddings? Bach. Haunted houses? Bach. Church? Bach. Shredding electric guitar solos? Look, it’s Bach! The Baroque composer produced more than 1100 works, from liturgical organ pieces to secular cantatas for orchestra, and his ideas about musical form and harmony continue to influence generations of music-makers. Here are 11 things you might not know about the man behind the music.

1. PEOPLE DISAGREE ABOUT WHEN TO CELEBRATE HIS BIRTHDAY.

Some people celebrate Bach’s birthday on March 21. Other people light the candles on March 31. The correct date depends on whom you ask. Bach was born in Thuringia in 1685, when the German state was still observing the Julian calendar. Today, we use the Gregorian calendar, which shifted the dates by 11 days. And while most biographies opt for the March 31 date, Bach scholar Christopher Wolff firmly roots for Team 21. “True, his life was actually 11 days longer because Protestant Germany adopted the Gregorian calendar in 1700,” he told Classical MPR, “but with the legal stipulation that all dates prior to Dec. 31, 1699, remain valid.”

2. HE WAS THE CENTER OF A MUSICAL DYNASTY.

Bach’s great-grandfather was a piper. His grandfather was a court musician. His father was a violinist, organist, court trumpeter, and kettledrum player. At least two of his uncles were composers. He had five brothers—all named Johann—and the three who lived to adulthood became musicians. J.S. Bach also had 20 children, and, of those who lived past childhood, at least five became professional composers. According to the Nekrolog, an obituary written by Bach’s son Carl Philipp Emanuel Bach, "[S]tarting with Veit Bach, the founding father of this family, all his descendants, down to the seventh generation, have dedicated themselves to the profession of music, with only a few exceptions."

3. BACH TOOK A MUSICAL PILGRIMAGE THAT PUTS EVERY ROAD TRIP TO WOODSTOCK TO SHAME.

In 1705, 20-year-old Bach walked 280 miles—that's right, walked—from the city of Arnstadt to Lübeck in northern Germany to hear a concert by the influential organist and composer Dieterich Buxtehude. He stuck around for four months to study with the musician [PDF]. Bach hoped to succeed Buxtehude as the organist of Lübeck's St. Mary's Church, but marriage to one of Buxtehude's daughters was a prerequisite to taking over the job. Bach declined, and walked back home.

4. HE BRAWLED WITH HIS STUDENTS.

One of Bach’s first jobs was as a church organist in Arnstadt. When he signed up for the role, nobody told him he also had to teach a student choir and orchestra, a responsibility Bach hated. Not one to mince words, Bach one day lost patience with a error-prone bassoonist, Johann Geyersbach, and called him a zippelfagottist—that is, a “nanny-goat bassoonist.” Those were fighting words. Days later, Geyersbach attacked Bach with a walking stick. Bach pulled a dagger. The rumble escalated into a full-blown scrum that required the two be pulled apart.

5. BACH SPENT 30 DAYS IN JAIL FOR QUITTING HIS JOB.

When Bach took a job in 1708 as a chamber musician in the court of the Duke of Saxe-Weimar, he once again assumed a slew of responsibilities that he never signed up for. This time, he took it in stride, believing his hard work would lead to his promotion to kapellmeister (music director). But after five years, the top job was handed to the former kapellmeister’s son. Furious, Bach resigned and joined a rival court. As retribution, the duke jailed him for four weeks. Bach spent his time in the slammer writing preludes for organ.

6. THE BRANDENBURG CONCERTOS WERE A FAILED JOB APPLICATION.

Around 1721, Bach was the head of court music for Prince Leopold of Anhalt-Köthen. Unfortunately, the composer reportedly didn’t get along with the prince’s new wife, and he started looking for a new gig. (Notice a pattern?) Bach polished some manuscripts that had been sitting around and mailed them to a potential employer, Christian Ludwig, the Margrave of Brandenburg. That package, which included the Brandenburg Concertos—now considered some of the most important orchestral compositions of the Baroque era—failed to get Bach the job [PDF].

7. HE WROTE ONE OF THE WORLD'S GREATEST COFFEE JINGLES.

Bach apparently loved coffee enough to write a song about it: "Schweigt stille, plaudert nicht" ("Be still, stop chattering"). Performed in 1735 at Zimmerman’s coffee house in Leipzig, the song is about a coffee-obsessed woman whose father wants her to stop drinking the caffeinated stuff. She rebels and sings this stanza:

Ah! How sweet coffee tastes
More delicious than a thousand kisses
Milder than muscatel wine.
Coffee, I have to have coffee,
And, if someone wants to pamper me,
Ah, then bring me coffee as a gift!

8. IF BACH CHALLENGED YOU TO A KEYBOARD DUEL, YOU WERE GUARANTEED TO BE EMBARRASSED.

In 1717, Louis Marchand, a harpsichordist from France, was invited to play for Augustus, Elector of Saxony, and performed so well that he was offered a position playing for the court. This annoyed the court’s concertmaster, who found Marchand arrogant and insufferable. To scare the French harpsichordist away, the concertmaster hatched a plan with his friend, J.S. Bach: a keyboard duel. Bach and Marchand would improvise over a number of different styles, and the winner would take home 500 talers. But when Marchand learned just how talented Bach was, he hightailed it out of town.

9. SOME OF HIS MUSIC MAY HAVE BEEN COMPOSED TO HELP INSOMNIA.

Some people are ashamed to admit that classical music, especially the Baroque style, makes them sleepy. Be ashamed no more! According to Bach’s earliest biographer, the Goldberg Variations were composed to help Count Hermann Karl von Keyserling overcome insomnia. (This story, to be fair, is disputed.) Whatever the truth, it hasn’t stopped the Andersson Dance troupe from presenting a fantastic Goldberg-based tour of performances called “Ternary Patterns for Insomnia.” Sleep researchers have also suggested studying the tunes’ effects on sleeplessness [PDF].

10. HE WAS BLINDED BY BOTCHED EYE SURGERY.

When Bach was 65, he had eye surgery. The “couching” procedure, which was performed by a traveling surgeon named John Taylor, involved shoving the cataract deep into the eye with a blunt instrument. Post-op, Taylor gave the composer eye drops that contained pigeon blood, mercury, and pulverized sugar. It didn’t work. Bach went blind and died shortly after. Meanwhile, Taylor moved on to botch more musical surgeries. He would perform the same procedure on the composer George Frideric Handel, who also went blind.

11. NOBODY IS 100 PERCENT CONFIDENT THAT BACH IS BURIED IN HIS GRAVE.

In 1894, the pastor of St. John’s Church in Leipzig wanted to move the composer’s body out of the church graveyard to a more dignified setting. There was one small problem: Bach had been buried in an unmarked grave, as was common for regular folks at the time. According to craniologist Wilhelm His, a dig crew tried its best to find the composer but instead found “heaps of bones, some in many layers lying on top of each other, some mixed in with the remains of coffins, others already smashed by the hacking of the diggers.” The team later claimed to find Bach’s box, but there’s doubt they found the right (de)composer. Today, Bach supposedly resides in Leipzig’s St. Thomas Church.

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