Common misconceptions

12 completely false "facts" everyone believes to be true

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Many of us have grown up thinking that bats are blind, that we can't go swimming right after lunch, that we only have five senses, or that camels store water in their humps. Wait, do you still believe in any of these things? Don't worry! To prevent you from continuing to spread wrong ideas, we have compiled a list of 12 myths that we all believe to be true but are actually false. Do you dare to question your common sense?

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It’s interesting how some ideas remain common sense for centuries without us questioning their veracity. A great example is the notion that we have only five senses, a concept that was developed by Aristotle more than 2,300 years ago and is still taught today from early childhood.

Fortunately, the advancement of science allows us to better understand the complexity and diversity of the world around us. Today, scientists argue that we have far more than just five senses—anywhere from 20 to 30—including thermoception, pain, hormonal sense, and balance, among many others.

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Contrary to what you may have thought all your life, pure water is not a good conductor of electricity. What really conducts electricity in water are its impurities, such as salts and minerals.

For example, tap water, which contains several dissolved ions, is a good conductor. In contrast, distilled water molecules have no free electrons to transfer an electric current. Hence, when handling electrical appliances near water, the real danger doesn't come from the water itself, but from its impurities.

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This is a typical scene in movies: a tough character taking a swig of some spirit before crossing a snow-covered field as an antidote to the cold. Although it is a widespread idea, it is not something you should imitate.

In fact, alcohol causes your body temperature to drop. Alcohol produces a momentary sensation of warmth by dilating blood vessels and directing blood to the surface of the skin, but before long, the body's core temperature drops, and you feel colder. Did you know that?

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No matter what your parents told you as a child, there is no scientific evidence that swimming after eating is dangerous. The assumption that you should wait at least an hour stems from the idea that after we eat, all the blood travels to the stomach and the body is not able to adequately supply the muscles.

As convincing as this may sound, the truth is that our body manages to maintain muscle work while we digest. In fact, some professional swimmers eat immediately before a competition to have enough energy to perform well.

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One of the most widespread myths in neuroscience is that we only use 10% of our brains. In reality, we use it all, even when we are doing nothing.

This misconception probably arose at the end of the 19th century. Since then, scientists have been able to determine that our entire brain is active thanks to modern neuroimaging techniques, such as functional magnetic resonance imaging. Despite the evidence, popular culture, the media, and even some scholars continue to perpetuate the myth that we only use 10% of our brains. So remember, no matter what you hear out there, your brain is never off; it’s active even when you sleep.

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Sleepwalking is a sleep disorder that occurs when people, usually children or young adults, walk or do other activities while they are still asleep.

Contrary to popular belief, waking a sleepwalker is unlikely to pose a major health risk. Moreover, according to experts, in the event of witnessing someone in such a state, the wise thing to do is to help them back to bed and, if necessary, wake them up.

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Camels can indeed stay hydrated even in the most inhospitable, arid, and hot environments. However, a common misconception is that these animals store water in their humps.

In reality, their humps are filled with fat, which provides them with energy for long distances. So, how do they manage to last up to 10 days without drinking water? The main key lies in their kidneys, which are able to concentrate urine to prevent water loss. In addition, their fur protects them from the ambient heat, preventing perspiration, and the mucosal structure of their nose can retain 66% of the moisture in the air.

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Knuckle cracking is a common habit. You might have noticed that many people do it, often without giving it much thought. For others, that characteristic popping sound raises concerns about its impact on health, such as its possible link to arthritis.

However, there is no conclusive scientific evidence that the manipulation of joints is associated with the development of arthritis. Numerous studies have found no correlation between knuckle cracking and chronic joint inflammation. In fact, this habit is usually harmless and is often simply a way to release tension.

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Setting your phone to airplane mode when boarding a flight seems like common sense. You wouldn't be crazy to think that your phone's signal could interfere with an airplane's navigation systems, potentially causing a disaster. However, the need for airplane mode is largely a myth.

There is actually no evidence that a cell phone has ever interfered with aircraft systems. The real reason airlines don't allow phone communications in the air is to avoid disturbing noises. Let's be honest, the majority of travelers probably prefer the silence anyway.

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Bats hunt in the dark by echolocation, which means they use self-produced sound echoes that bounce off objects to help them navigate. But that doesn't mean that they can't see.

Bats are not blind at all; in fact, they have pretty good vision. Although they can't see as well as humans, they can see better than many mammals —they can distinguish shapes, contrasts, and some colors. So, despite their nocturnal habits and the many popular sayings we like to repeat, bats have pretty good eyesight.

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We're sorry to be the ones to debunk this myth, but it's time you knew that gravity exists everywhere in the universe. The term "zero gravity" is often used to describe the conditions experienced by astronauts in space, but it's a bit misleading, as gravity is never truly zero.

The more correct term to describe the phenomenon experienced by astronauts when they are on the International Space Station, for example, would be "microgravity".

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Fictional characters such as Winnie the Pooh helped fuel this myth. While it is true that it’s common to see bears eating honey, it is the bees and larvae they are really interested in.

While honey alone provides them with some vitamins, minerals, and calories, such as sugar, the insects found inside the beehives give them the protein they need to stay strong.

Language in motion

From Nerd to Robot: 10 words coined by famous writers

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As masters of language, writers sometimes find that their imagination and creativity go far beyond the vocabulary the world has to offer. In order to put their ideas into writing, they have to create new words that eventually become part of the dictionary. Here are 10 terms and expressions used in modern language that you probably didn’t know were invented by famous writers.

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Dr. Seuss’ talent for telling fantastic stories through rhymes is well known. But very few people know that the creator of The Grinch and The Cat in the Hat was also responsible for the existence of the word "nerd."

In his 1950 book, If I Ran the Zoo, a little boy daydreams about what kind of animals he would have if he were in charge of a hypothetical zoo: "a Nerkle, a Nerd and a Seersucker". Although the term described an imaginary being -and the exact origin of a slang word can never be certain- it’s believed it was later adopted by students to refer to anyone with superior intelligence but not many social skills.

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Nowadays, freelance work is very widespread, especially among young people. But did you know that the word "freelancer" originated in the 19th century? The term first appeared in the historical novel Ivanhoe by Scottish novelist, poet, and historian Sir Walter Scott.

In the book, published in 1819 but set in England in the Middle Ages, Scott refers to mercenaries free of all allegiance who offer their services to anyone willing to pay them to fight for any nation. Thus, from the mixture of the words "free" and "lancers" came the term that today is given to those who work independently rather than on a regular salary basis.

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Merriam-Webster Dictionary defines the word "pandemonium" as a "wild uproar" or "a chaotic situation". The origin of this word dates back to the 17th century. In 1667, English poet John Milton first used the term to name the capital of hell, home of the main character of his epic poem Paradise Lost.

"Pandemonium" is a combination of the Greek prefix pan-, which means "all", and the Late Latin daemonium, meaning "evil spirit". Although today we no longer use the term to refer to the actual location of Satan and the fallen angels, the word continues to describe an infernal place or situation.

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Nowadays, there is no doubt that the word "cyberspace" refers to the online world of computer networks. While it may seem that the term has been in our language forever, it was actually first used by American-Canadian speculative fiction writer William Ford Gibson in the 1982 short story Burning Chrome.

Two years later, the author expanded the concept in his novel Neuromancer to describe a fictitious computer network containing vast amounts of information that could be exploited for wealth and power. Ring a bell? "Cyberspace" has since become a widely used word in many languages.

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While the feeling of being bored must have existed since ancient times, the word for it was not put into writing until the mid-19th century. According to the Oxford English Dictionary, the first written record of the word "boredom" appears in Charles Dickens' 1852 novel Bleak House.

However, some historians have found antecedents that predate Dickens use of the term. Lord Byron used "bores" and "bored" in his 1823 epic poem Don Juan. And a few years later, Herman Melville used other variations of the term, like "bore" and "bored to death". While we can’t be sure who wrote the word first, its literary origin is undeniable.

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"Serendipity" is known as a fortuitous and unforeseen finding or discovery, something that happened by chance but still has value. This term was coined in 1754 by British writer Horace Walpole. It derives from a traditional Persian story in which the princes of Serendip turn to chance to find the solution to their problems.

In this case, we can be absolutely sure that "serendipity" is a Walpole creation. The author himself explains how he conceived the term in one of the countless letters he wrote throughout his life. In those letters, we can find evidence that he invented at least 200 words, although most of them aren’t used in modern everyday language.

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In 1920, when he was writing his next work, Czech playwright Karel Čapek desperately needed an original word that could define human-like machines created by a company to fulfill the hard tasks that people no longer wanted to do.

The first name that came to Čapek’s mind was "labori", from the Latin labor, meaning "work". However, his brother Josef was not very convinced and suggested "roboti", inspired by the Czech word robota, meaning "servitude" or "hard work." In 1922, the term "robot" made its way into our language when the play R.U.R. was translated into English.

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Well, maybe he didn’t invent it, but we have Mark Twain to thank for first putting in writing the term "hard-boiled" in relation to human character. As a writer of local color, Twain often used colloquialisms and regionalisms that he heard from other people and, by writing them down, made them familiar to the entire population.

In this sense, while the expression was probably known in some circles, the father of American literature was the first to use it as an adjective meaning "emotionally hardened, devoid of sentimentality".

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Although it comes from ancient Greek, the word "utopia" in its current sense was first used in 1516. Inspired by the New World, English philosopher and author Sir Thomas More imagined a fictional island society where everything worked in harmony.

"Utopia" literally translates as "no place", coming from the Greek οὐ ("not") and τόπος ("place"). The term popularized by More became so widespread that, over time, its meaning changed and is now used not only to refer to a specific place but to describe perfect scenarios or thoughts that are hard to attain.

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One of the most important pieces of English literature is also responsible for the name of a popular social network. We’re talking about The Canterbury Tales, a collection of 24 stories written by Geoffrey Chaucer in the 14th century.

In one of the tales, the English poet coined the onomatopoeia "twitter" to refer to the soft singing of a caged bird crying out for freedom. The neologism was later included by the Oxford Dictionary as a "short burst of inconsequential information". Fast forward to the 21st century, and American Internet entrepreneur Jack Dorsey uses the term to refer to the short, frequent posts on his now-famous platform. That also explains why Twitter’s logo was a bird!