Oops!

How did the Seventh Commandment cost these printers $30,000?

Image: Florian Klauer

Blunders are part of life. As human beings, we can all make mistakes, especially when writing or typing. A simple slip of the fingers on the keyboard might be nothing more than a joke among friends, but throughout history, there have been some typos that meant much more than that, from millions of dollars lost to huge controversies and scandals. If you want to know which mistakes could have led to such consequences, here are 10 of the most notorious typos in history!

Image: Yifu Wu

The title of this entry is not a new or unknown word but a typo in the inscriptions of one of the most important monuments of our country.

We're talking about none other than the Lincoln Memorial, the landmark honoring our 16th president in Washington, D.C. Built between 1914 and 1922, the memorial has part of President Abraham Lincoln's Second Inaugural Address -delivered on March 4, 1865- inscribed on its north interior wall. But a mistake occurred during the engraving: the word "future" was carved as "euture."

The extra line that turned that F into an E was filled in and fixed. However, if you get close enough, you can still see traces of that original E on the monument wall.

Image: Shutter Speed

Have you ever read the word "dord"? Do you know what it means? Probably not, and it's not because your vocabulary is lacking but because no one knows!

"Dord" is a fake or ghost word that appeared in the 1934 international edition of the Merriam-Webster Dictionary. One of the editors mistakenly interpreted a note that said "D or d." The note indicated that "D" or "d" should be used as abbreviations in certain parts of the dictionary, but the editor read that note as a whole word: Dord.

The term appeared in the dictionary for several years until another editor noticed the error and removed it.

Image: Brett Jordan

Probably the most famous website in the world, Google got its iconic name due to a typo.

When Larry Page and Sergey Brin were creating the company, they chose the word "googol" as the name for their search engine. But what does it mean? "Googol" is the mathematical term for the number 10 raised to the power of 100.

However, when they first typed it in to register the domain, they accidentally entered "Google." Luckily, they loved the typo and decided to keep it; the rest is history!

Image: Aaron Burden

What if we told you that there's a Bible that reads, "You shall commit adultery." Believe it or not, in 1631, a Bible was published in London that incorrectly listed that phrase as the Seventh Commandment. Of course, that wasn't an actual religious principle but an accidental omission of the word "not."

That Bible caused a scandal in Europe, receiving nicknames such as "the wicked Bible," "the adulterers' Bible," and "the sinners' Bible." Because it was so controversial, the British government ordered all copies to be destroyed, which is why only a few exist today. In addition, the printers were fined 300 pounds, about 30,000 dollars in today's money.

Image: David Torres

If it hadn't been for an error in a spacecraft's guidance system, perhaps we would know more about Venus, the hottest planet in our Solar System.

The mistake we're talking about was a missed hyphen in the spacecraft's software code. Although this may not seem like a big deal, the consequence of that typo was huge: The 1962 Mariner 1 mission, which was launched with the intention of orbiting Venus, lost contact with Earth shortly after launch!

Surprisingly, a simple missed hyphen caused an entire mission to fail.

Image: Quino Al

NASA may have lost thousands of dollars due to their mistake, but there had been others who got exactly the opposite.

In the 1980s, a woman earned 10,000 dollars due to a typo! It was the owner of a travel agency who chose to promote her business in the Yellow Pages, but something went wrong. The ad came out with a misspelled word: instead of promoting the agency's "exotic trips," it advertised "erotic trips."

The woman decided to sue the Yellow Pages publisher for the damages her company received, and she won!

Image: Rens D

Remember Popeye the Sailor? He had a secret to super strength: spinach! Today, we know that spinach is much like other green leafy vegetables, but for years, it was believed to have extraordinary qualities. And it was all because of a typo!

In the 19th century, a German chemist was nutritionally analyzing spinach. But when it came time to write down the results, he made a mistake. He meant to write that spinach contains 3.5 milligrams of iron per 100 grams. Instead, he accidentally wrote that it contains 35 milligrams! Later, the myth gained even more strength thanks to Popeye's amusing adventures.

Image: Maurice DT

As we've seen in this article, prestigious institutions can also make mistakes sometimes. That was the case with the National Hockey League in 1972.

The Stanley Cup is one of the oldest trophies in the NHL, characterized by something special: it's engraved with the names of the players, coaches, and owners of all the winning teams. However, the trophy is also known for having several typos.

When the Boston Bruins won the Cup in 1972, they didn't expect what would happen next. Their team name was misspelled on the silver cup, which curiously read "BQSTQN BRUINS"!

Image: Esther Ní Dhonnacha

We all have a deep appreciation for our Constitution, the document that defined the ideas and principles that formed our nation. But even in a paper as important as this one, you can find some peculiar details.

In the original US Constitution, you can read the word "Pensylvania." As you can see, the state's name is missing an N. According to the National Archives official website, the author of this detail was none other than Founding Father Alexander Hamilton. From the 18th century on, the most commonly accepted spelling was and still is "Pennsylvania," making the word in the document a grammatical error according to today's standards.

However, when the Constitution was drafted, it wasn't a typo, as "Pensylvania" was actually an accepted spelling back then.

Image: Dan Mall

The US Constitution is not the only site where Pennsylvania's name is spelled differently: the iconic Liberty Bell bears a similar "typo."

The great bell of more than 2,000 pounds is inscribed with a Bible verse and the words, "By Order of the Assembly of the Province of Pensylvania for the State House in Philada." The word "Pensylvania" is typed just like in the Constitution. As you know, the name of the state wasn't standardized at that time, so there were also other accepted ways, including the less frequent "Pennsilvania."

If you visit the Liberty Bell at the Independence National Historical Park in Philadelphia, you can still read the word as it was written then.

Decoding

Being a "treasured guest" is not a compliment. This is the hidden meaning

Have you ever heard "Code Adam" while shopping for groceries at Walmart? Or maybe you’ve heard how "Dr. Firestone" was being paged during a routine hospital visit. They sound like harmless announcements. But behind these ordinary words are secret codes staff use to signal emergencies without causing panic. From hospitals and supermarkets to airports and Disney Parks, these phrases quietly warn employees that something is happening. You hope you never hear them, but if you do, it helps to know exactly what they mean.

We all love getting special attention at airports or hotel desks, but if you hear the clerk call you a "treasured guest," don’t feel so flattered. You may not be as VIP as one could think.

In the hospitality industry, "treasured guest" has become a humorous bit of industry folklore to describe someone causing trouble. Maybe a customer yelling at staff over expired coupons, demanding impossible accommodations, or throwing a full-blown tantrum at the front desk. Whatever it is, the phrase has become the staff’s secret way to warn co-workers without escalating the situation in front of the customers. Most guests don’t realize the meaning, but once you know it, you may start hearing it more often. We just hope it’s not about you.

Imagine you’re pushing a shopping cart through Walmart when suddenly the overhead speaker announces, "Code Adam." You can easily assume it’s some kind of employee meeting or cleanup request. But when you see them start locking the exits and moving around, you know something’s wrong.

This code was created in 1994 by Walmart in collaboration with the National Center for Missing & Exploited Children (NCMEC), in memory of the tragic case of 6-year-old Adam Walsh. Adam was abducted from a Sears department store in 1981 while shopping with his mother. His father, John Walsh, later became famous for hosting the TV program America’s Most Wanted and advocating for missing children. Even if Adam’s story ended in tragedy, Walmart created the emergency system in Adam’s memory, and other retailers soon adopted it nationwide, intending to have a quick response to missing or abducted children.

You’re sitting in a hospital waiting room during a routine check-up when you suddenly hear "Code Blue, Room 214." Most people immediately know it sounds serious, even if they are not entirely sure why.

The phrase "Code Blue" is used at hospitals to draw the necessary staff and equipment to perform a resuscitation. It was created in the early 1960s at Beathany Medical Center by Dr. Hughes Day. Before then, hospital resuscitations were often chaotic and poorly coordinated. In 1961, Dr. Day received a grant to build one of America’s first cardiac care centers, and he developed both the Code Blue alert system and the modern crash cart to improve survival rates during cardiac emergencies. Today, the system is used in hospitals across the country, sometimes with specialized versions like "Code Blue Pediatric" or "Code Blue Neonate."

Imagine visiting a loved one in the hospital when the intercom calmly announces, "Paging Dr. Firectone to the third floor." Your head surely goes, "Dr. Firestone’s probably having a busy day up there." He is, but it’s not what you think.

The phrase is actually a discreet fire alert used to warn staff about smoke, flames, or overheating equipment without frightening patients and visitors. Hospitals adopted these coded announcements after realizing that openly yelling "fire" over loudspeakers could create panic, especially among patients who aren’t able to move quickly. "Code Red" is an alternative used by many health centers today, but it also hints at the situation while keeping hallways calm.

You’re standing at a checkout counter when the cashier picks up the phone and quietly says, "I need a Code 10 authorization." If you think that’s just another way to get a supervisor’s approval or technical issue, think again. In reality, the cashier may suspect the credit card is stolen or fraudulent.

Code 10 was developed through a cooperative effort between major credit card companies like Visa and Mastercard, along with international standard organizations. As credit cards became more common in the 1960s and 1970s, stores needed a discreet way to alert banks about suspicious activity without directly accusing customers and potentially putting employees at danger. When a cashier requests a Code 10, the bank’s operator begins asking yes-or-no questions to assess the situation and guide the employee on what to do next.

You’ve probably experienced those long airport security lines. The wait is usually uneventful. But sometimes, you can hear "Code Bravo" over the speakers. Maybe it’s a delay, or maybe it’s an issue with luggage. Within seconds, people stop moving, the security line freezes, and exits may even close. It’s something bigger.

Code Bravo is the emergency phrase used by airport security and the Transportation Security Administration to signal a serious security threat, such as an unattended bag, a breach at a checkpoint, or someone slipping into a restricted area. The term comes from the international phonetic alphabet used in aviation and military communications, where "Bravo" represents the letter B. When this is called, security staff immediately lock down affected areas, stop screening lines, and search for the source of the threat. To passengers, it’s sudden and confusing, but to security, it’s a carefully rehearsed response.

You are heading back to your cabin on a cruise ship when the speakers announce, "Code Alpha, Deck 7." You may think Alpha is related to the captain, but that’s not the case. It means someone on board is suffering a medical emergency.

The phrase comes from the NATO phonetic alphabet, where "Alpha" represents the letter A. In maritime emergency jargon, it became shorthand for a Priority A medical situation requiring immediate response. Cruise lines such as Royal Caribbean and Disney Cruise Line commonly use the term, though some ships use variations like repeating "Alpha" three times. Once the code is announced, onboard medical teams rush toward the specified deck or cabin. If necessary, stretcher crews are mobilized, and in severe cases, the ship may even divert course toward the nearest port for emergency evacuation. Passengers are enjoying the views, but the staff is running to save a life.

Anyone who remembers the CB radio craze of the 1970s probably smiles when they hear "10-4." Movies, truckers, and radio fans turned those number codes into a part of American culture. So if you overhear "10-33" on a police scanner, you might assume it’s just another routine message. But it’s not as simple as it sounds.

The 10-code system was first created in 1937 by Illinois State Police communications director Charles Hopper and later standardized by the Association of Public Safety Communications Officials, better known as APCO. Officers needed short phrases they could understand clearly over crackling radio signals. The 10-33 code commonly means an officer needs emergency assistance. In some departments, it also signals radio silence so dispatchers can focus on the crisis unfolding in real time.

Disney World is amazing, the parks offer something for everyone, and there are things to see wherever you look. But that’s exactly the kind of place where a child can easily disappear into a sea of strollers, balloons, characters, and crowds. For that reason, Disney has developed the "Signal 70," which alerts cast members and security that a child has become separated from their family.

The number comes from older police and emergency radio systems, where "70" was commonly associated with missing persons. Disney adopted the phrase because it allows employees to communicate discreetly without frightening or alarming nearby guests. If a member finds the child, they gently -and magically- escort them to Baby Care Center, where they coordinate the reunion.

Cruises are great to relax, enjoying a good book under the sun with a nice drink by the side. Until you hear "Echo, echo, echo" on the speakers. If you do, something is happening somewhere else on the ship.

The code is used among cruise employees to signal that dangerous winds or a navigational hazard are affecting the ship. It comes from the international maritime phonetic alphabet, where "Echo" stands for the letter E. In maritime signalling, the letter traditionally means "I am altering my course to starboard." And, in time, the phrase became associated with urgent ship maneuvers and weather-related warnings. However urgent, the repetition of the word by three doesn’t represent life-threatening situations. It alerts the crew of a certain hazard to prepare while avoiding panic among passengers.