upworthy

learning

Science

Humans are the only species with chins. Here are the wildest theories at to why.

Chinteresting, indeed.

Photo credit: Canva, Gage Skidmore/Wikipedia

The chins evolved to bring us Henry Cavill. Duh.

When we talk about what makes humans special, we usually point to our big brains, our opposable thumbs, our affinity for tool-making…or, more recently, the fact that we can turn oat milk into a personality trait.

But scientists say there’s something else that sets us apart from every other species on Earth. Something so ordinary you probably don’t even think about it when you look in the mirror.

It’s your chin. Yes, really. That tiny little nub of bone under your smile is one of the weirdest, most mysterious features in all of evolution.

No other animal has one. Not chimpanzees. Not gorillas. Not even our closest ancient relatives, the Neanderthals. Somewhere along the evolutionary line, humans woke up with a chin. Researchers have been trying to figure out why ever since, which has led to some pretty wild theories.

evolution, chin implants, cool history, science, pbs pbs eons, paleontology, smithsonian magazine Neanderthal media1.giphy.com

Chewing, by far, is the prevailing and most studied theory. After all, our ancestors’ jaws and teeth got smaller as our diets changed, and perhaps the chin evolved to help keep everything strong and supported. Flora Gröning, a biological anthropologist at the University of York, put that theory to the test by digitally modeling how human and Neanderthal jaws handled pressure. Turns out, she found, the chin does give our jaw a little extra reinforcement while chewing. Score one for Team Chewing.

But another camp believes it’s all about how we talk. In 1913, physician Louis Robison suggested that the chin developed to support the human language growing more complex, acting like a tiny shock absorber to protect our jaws from the muscular gymnastics required for human speech. Because let’s be honest, “She sells seashells by the seashore” is no easy task.

Then there’s a third, more scandalous idea: maybe it’s about attraction. According to the sexual selection theory, our chins could be nature’s version of a dating app filter. Studies have found that women may subconsciously prefer men with broader, more prominent chins, which signal testosterone and “good genes.” Men, on the other hand, often favor women with narrower, softer chins—traits linked to higher estrogen levels.

- YouTube www.youtube.com

This theory was strengthened when researchers Zaneta Thayer and Seth Dobson examined nearly 200 skulls from around the world and noticed that male chins did tend to be taller and more pronounced. That suggests our chins might have been shaped, at least in part, by what our ancestors found attractive.

However, the more outlandish theories involve laundry…and boxing. Some think that chins came about so that we could clamp down on cloth while folding, while others think that they evolved to take a punch.

Still others think chins just sort of happened. No actual purpose, just a byproduct of evolution. Wouldn’t be the first time. (Looking at you, belly buttons)

In the end, there may not be one single reason we have chins. It could be a mix…a little bit of chewing, a little bit of talking, and a little bit of flirting. A little bit of punching? Evolution, it seems, has range.

- YouTube www.youtube.com

So next time you rest your hand under your chin in deep thought, give it some credit. That humble bump of bone may not get the glory our brains do, but it’s uniquely ours. A small, sculpted reminder that being human is as much about mystery as it is about the mind.

Special thanks to Smithsonian Magazine and PBS Eons for supplying such interesting info!

From Your Site Articles
learning
ScienceNature
Humor

13 everyday idioms that make zero sense until you know where they come from

Sweating like a pig? Pigs don't sweat!

Images via Unsplash

Images of idioms.

I've always really liked cliches, idioms, proverbs, and common phrases we like to use over and over. They can get repetitive at times, but they're crucial tools in communication. They allow us to convey so much meaning in so few words—a commonly understood shorthand that can get complex points across quickly.

The only problem is that many of the most popular idioms in common use date back hundreds of years. In that time, they've either become outdated or seen their words adopt new meanings. In some cases the idioms have been shortened or reversed, losing important context. So when someone tells you to "bite the bullet," you may inherently know what they mean—but if you really stop and think about it, you have no idea why it means what it means.

If you're a word nerd like me, you'll be absolutely fascinated by the origin and evolution of some of these common idioms, and how they came to mean what they mean today.

1. Sick as a dog / Working like a dog

gif, dog, working, idioms, funny, sick Dog hard at work Giphy

Ever have a cold and tell someone you're "sicker than a dog?" Kind of rude to dogs, in my opinion, and a little strange. I've had dogs my whole life and can't remember any of them coming down with the flu.

Sick as a dog actually originates hundreds of years ago, if not longer. Some explanations say that in the 1700s, stray dogs were responsible for the spread of many diseases, along with rats and other gutter critters. There are also references as far back as the Bible to dogs eating their own vomit—sounds pretty sick to me.

What about working like a dog? Dogs are the laziest creatures around! For this one you have to remember that dogs as "pleasure pets" is a relatively recent phenomenon. Before that they had to earn their keep by working tirelessly on the farm to herd and protect the animals.

2. Sweating like a pig

pigs, sweat, sweating like a pig, idioms, origins Close up of pigs.Image via Canva

This is an extremely common idiom that we all use and accept. There's just one problem with it: Pigs don't sweat!

So...what gives? You might be surprised to hear that 'sweating like a pig' actually has nothing to do with farm animals.

According to McGill University: "The term is actually derived from the iron smelting process in which hot iron poured on sand cools and solidifies with the pieces resembling a sow and piglets. Hence 'pig iron.' As the iron cools, the surrounding air reaches its dew point, and beads of moisture form on the surface of the 'pigs.' Thus, 'sweating like a pig' indicates that the 'pig' (i.e. iron) has cooled enough to be safely handled. And that's a 'pig' you wouldn't want to eat."

3. Bite the bullet

idioms, bite the bullet, bullets, guns, ammunition A person holds a plate of bullets.Image via Canva

Biting the bullet refers to sucking it up and doing something hard, something you don't want to do but is necessary, and accepting the difficult consequences and/or pain that comes with it. But what does that have to do with biting a bullet?

There are different theories on this. One common explanation is that in the olden days it was common for soldiers on the battlefield receiving surgery to bite down on a lead bullet. You've probably seen people in movies biting down on a piece of wood or leather strap. Since lead is a softer metal, it would give just a little bit between their teeth and not damage them. So the idiom 'biting the bullet' means, "Okay, this is going to suck, just bite down and get through it."

4. Healthy as a horse

idioms, horses, healthy as a horse, animals, sayings A horse making a funny face. Image via Canva

This one has always confused me. As a layman, it seems like horses are prone to injury and have trouble recovering when they hurt themselves. More research shows that horses can not vomit, which means they are highly at risk for deadly colic episodes. Doesn't sound super healthy!

The best explanation I can find for healthy as a horse is that, again, in the olden days, horses were symbols of health and strength and vitality. Which checks out—they're really powerful, majestic creatures.

5. Slept like a baby

idioms, slept like a baby, babies, kids, children, sayings A baby with glasses sleeping on a moon pillow.Image via Canva

To many parents, this common idiom is rage-inducing. If babies sleep so well, why am I so exhausted all the time?!

Yes, babies are notorious for waking up every few hours or at the first sign of hunger or a dirty diaper. It puts their parents through the wringer (another strange idiom!). But to the outside observer, a sleeping baby is pure bliss. They are so innocent and blissfully unaware of anything going on around them—after all, if they're not sitting in a dirty diaper they really don't have too many other things to worry about. Also, despite all their shenanigans, babies do sleep a lot—around 17 hours a day or so. When you put it that way, the idiom starts to make a little sense.

6. Happy as a clam

idioms, clams, happy as a clam, seafood, sayings Ocean Seafood GIF by Lorraine Nam Giphy

Clams are a lot of things. Some people find them delicious, others disgusting. One thing I think we can all agree on is that clams don't seem particularly happy, which makes this idiom a bit of a conundrum.

The truth is that this phrase is actually derived from the full version: "Happy as a clam at high water."

At low water, or low tide, clams are exposed to predators. At high tide, they're safe in deeper water. That's about as happy as mollusk can get!

7. The proof is in the pudding

pudding, idioms, proof, sayings, origins Chocolate pudding.Image via Canva.

Hey, we all love pudding. But what the heck does this mean? If you're not familiar, it refers to judging something based on the results it generates—but what that has to do with pudding is a bit of a mystery to most people.

This is another example of a shortened idiom that makes more sense when you read the full, original line: "The proof of the pudding is in the eating."

According to Dictionary.com it "originated as a reference to the fact that it was difficult to judge if the pudding was properly cooked until it was actually being eaten. In other words, the test of whether it’s done is taking a bite."

8. Don't look a gift horse in the mouth

horse, smiling, gift horse, origin, idiom Smiling horse. Giphy

I've always been a big fan of this idiom, which basically means that it's rude to over-analyze or criticize something you got for free, especially when it was a nice gesture from a friend or loved one.

But here we go with horses again! This phrase likely originated from the fact that you can determine a horse's age and health by looking at its teeth. So if someone were to give you a horse as a gift, it would be rude to immediately try to see how "good" it was by looking in its mouth.

9. Clean as a whistle

idioms, clean as a whistle, kids, sayings, whistles A young boy blows a whistle. Image via Canva

Whistles are objectively disgusting. They collect spit and germs every time they're used. I certainly wouldn't hold them up as a beacon of cleanliness.

So what gives with this idiom? There are several possible explanations that have been proposed.

First, a whistle won't work, or won't work very well, if it has debris blocking up its inside. So you can think of "clean" in this case as being "empty or free of clutter." Another possibility is that, in this idiom, clean refers to sharpness—as in the sharp sound a whistle makes—and that inference has been lost over time.

10. Pull yourself up by your bootstraps

idioms, pull yourself up by your bootstraps, sayings, values Two women laugh looking at a laptop screen Image via Canva

This phrase is commonly used to describe someone who was "self-made" and built themselves up into a success from nothing. Imagine lying on the floor and hoisting yourself to your feet using only the straps on your boots.

The only problem is...that's impossible! And that's exactly the point. This idiom is actually meant to be sarcastic and to imply that "socioeconomic advancement...was an impossible accomplishment," according to Useless Etymology.

11. Have your cake and eat it too

cartoon, cake, slice, chocolate cake, idioms, origin Slice of cake. Giphy

Why bother having a cake if you can't eat it? That's the mystery of this extremely common idiom or proverb (sometimes worded "you can't have your cake and eat it, too")

The explanation is actually really simple. "Have" in this case really means "keep" or "hold onto." So, in that case, it makes perfect sense that you can't eat your cake and also still have it. "You can't have it both ways," would be another way of saying it. This saying likely began in a letter from Thomas, Duke of Norfolk to Thomas Cromwell in 1538. Thomas wrote,

"A man can not have his cake and eat his cake."

The quote appeared again in 1546 in A Dialogue Conteinyng the Nomber in Effect of All the Prouerbes in the Englishe Tongue, a book of proverbs by John Heywood:

"Wolde you bothe eate your cake, and have your cake?"

12. Head over heels

tears for fears, head over heels, sayings, idioms tears for fears 80s GIF Giphy

Very rarely do people describe being deeply in love without using this phrase. But it's a confusing one, because isn't your head always over your heels? That doesn't seem to be an extraordinary state of being.

The idiom here has actually been flipped over time for unknown reasons. According to Dictionary.com, the saying originally went "heels over head," implying upside down. The saying originated in the 1300s, took its "present form" in the 1700s, and took its present meaning in the 1800s.

13. Pushing the envelope

idioms, pushing the envelope, exercise, gyms, workouts, sayings Two women at a gym push an oversized envelope. Images via Canva

When I think of radical, risky, or pushing the limits of what's possible, sliding an envelope across a table just somehow doesn't quite capture it for me. But an envelope doesn't have to be just a paper container that you put other paper in. It can actually refer to different parts and practices of an aircraft.

"Push the envelope comes from aeronautics, where it refers to a set of performance limits that may not be safely exceeded," according to Merriam Webster. Now that's more like it!

From Your Site Articles
idioms
HumorJoy
Learning

How Japanese introductions literally translate to English is a wild linguistics lesson

"First time! I'm Under the Forest."

Photo by Satoshi Hirayama/Pexels

Greetings in Japanese sound quite odd when literally translated to English.

Studying a language other than your own native tongue is always a trip. Wrapping your head around completely different grammar and syntax rules, trying to create sounds your mouth isn't used to, sometimes learning entirely new alphabets (or characters when there is no alphabet), all just to be able to communicate with more of your fellow human beings. (Seriously, when are we going to decide on an actual universal language?)

Linguistics is wild, as evidenced by certified Japanese teacher Hikari's video demonstrating what Japanese introductions would sound like if they were translated literally into English.

One of the first greetings you learn in Japanese is "hajimemashite," which is generally interpreted as "Nice to meet you," or "How do you do"—something you say when you meet someone. But the literal meaning of the phrase is "at the beginning" or "first time," which of course sounds odd in English. (Similarly to if you were to literally translate "How's it going?" from English to another language, the understood meaning of "How are you feeling right now?" wouldn't come through, since the words "it' and "going" have nothing to do with how you're feeling.)

Then there are name introductions, which seem like they should just be straight up names, but aren't because of what they mean. "I'm Under the Forest." "I'm Inside the Field." Huh? And wait til you see how they share their ages. Watch:

- YouTube youtu.be

To make things a little clearer, the name "Under the Forest" is almost certainly Morishita, a common last name in Japan (Japanese people generally introduce themselves by last name). The translation "under the forest" comes from Chinese characters used in Japanese, Kanji, that most Japanese last names are written in. Morishita is 森下 in Kanji, with 森 (mori) meaning "forest" and 下 (shita) meaning "below" or "under." "Inside the Field" would be the name Tanaka, with a similar explanation, but with different characters.

As far as ages go, that's a whole other cultural quirk. In Japan, time is separated into imperial eras based on whoever the emperor is, and each era has a name. "Shining harmony 63" means she was born in 1989, or the 63rd year of the Shōwa ("shining harmony") era. Moons are months, and days are, well, days.

Japan, eras, calendar, moons, days, time Imperial eras of time. Canva Photos.

Japan is the only country where Japanese is an official language, but thanks to the tech boom there in the 80s and 90s—and the rise of the popularity of anime worldwide—the Japanese language has seen continually growing interest outside the archipelago nation. According to Brittanica, there are around 127 million Japanese speakers worldwide, with some 1.5 million Japanese immigrants (and their descendants) living in parts of North and South America with "varying degrees of proficiency in Japanese."

anime, popular anime, sailor moon, watching anime, japanese sailor moon walking GIF Giphy

(Side note: Having studied Japanese myself, I can attest that it's a very fun language to learn. The alphabets and Kanji are the hardest parts—the phonetics are consistent and the grammar is quite logical, with far fewer exceptions to the rules than English.)

In addition to videos like this one, Hikari offers Japanese lessons on her YouTube channel, Japanese with Hikari. You can also sign up for her newsletter, chock full of motivational posts, encouragement, and resources to keep subscribers motivated to learn Japanese.

This article originally appeared last year. It has been updated.

From Your Site Articles
languages
LearningEducation
Motherhood

Mom shows 9-year-old how to leave uncomfortable conversations and it's advice everyone should hear

You don't need to let someone make you uncomfortable.

via Canva/Photos

A young girl with her hand over her mouth.

Few things are more uncomfortable than sitting like a deer in the headlights while someone pushes you into an incredibly awkward conversation. Whether it’s a TMI (too much information) conversation or they want to talk about politics or religion, it’s hard to tell someone that a subject is off-limits.

However, in a viral Instagram post, Charisse Sims makes an essential point about these awkward situations: it will be uncomfortable whether you tell them to change the subject or if you have to sit through the conversation. So, it’s better to take the option that’s less hurtful to you. Sims is a mother of six and the host of the Parenting for the Culture podcast. She is also an awarded Educator by PBS and PBS Kids and founder of The Sims Library of Poetry.

How do you leave uncomfortable conversations?

She shared the advice while talking to her nine-year-old daughter, who she could tell felt very awkward about a recent conversation. “Immediately, when she started having that conversation, I could see on your face that you felt uncomfortable,” Sims told her daughter in an Instagram Reel. “When you have that feeling, your response to them should be, ‘I feel uncomfortable in this conversation. Let's talk about something else.”

Sims then asked her daughter to repeat the phrase a few times to burn it into her brain for when she needed it. Her daughter then admitted that telling someone to change the conversation would be difficult. Most people probably agree that telling people you’d like to change the subject is uncomfortable.

However, Sims makes a great point: you will be uncomfortable both ways, so choose the one that best suits you.

“Which one is a longer discomfort, taking 10 seconds to say, ‘I feel uncomfortable in this conversation. Can we talk about something else?” Sims asked. “Or, sitting in a 20- to 30-minute conversation that you feel uncomfortable in?”

stop, woman, woman says stop, talk to hand, hand out, stop hand, conversation, awkward A woman holding her hand out saying "stop." via Canva/Photos

“It is uncomfortable telling people stop. It is uncomfortable being like, ‘I don't really like what you're doing,’ because you're worried you're going to hurt their feelings, and you want them to like you,” Sims continued. “But it's also uncomfortable to sit there and be uncomfortable for a long time. So choose your discomfort, and choose the one that's going to help you, not hurt you.”

Candace Smith, an etiquette expert, says it’s also helpful if you have another topic on deck that the person may be interested in to make the transition smoother for both parties. “When you think it’s time to let the other person know you will change the subject, be positive, and smile. Keep your eye contact warm and direct,” she says, before giving an example: “I’m going to change our subject here. Let’s talk about something cool like the Marvel movie!”

shhh, shush, finger over mouth, girl saying quiet, end of conversation, finger over mouth A young girl making a "quiet" motion. via Canva/Photos

Sims' advice is important because it’s something that all of us, adults included, could use next time they are forced into an uncomfortable situation. Her advice is a great tool for making sound decisions when we feel awkward and unable to think on our feet. “I wish when I was growing up, I was taught more how to navigate tricky situations rather than just being told to stay out of them,” Sims wrote in her post. “As simple as that is, It’s not always that easy. Our children need more support and actual practice navigating these awkward situations.”

This article originally appeared in April.

From Your Site Articles
MotherhoodFamily
Trending Stories