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Here's what it takes to grow one of the most loved fruits in the world

"It's what we're leaving to our kids."

Sumo Citrus

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Don Bay has been in the citrus business for over 50 years now, and according to him, his most recent growing endeavor has been the most challenging. Alongside his son Darren and grandson Luke, Don cultivates Sumo Citrus®, one of the most difficult fruits to grow. The Bay family runs San Joaquin Growers Ranch in Porterville, California, one of the farms where the fruit is grown in the United States.

Sumo Citrus was originally developed in Japan, and is an extraordinary hybrid of Satsuma, Orange, and Mandarin.

The fruit is temperamental, and it can take time to get a thriving crop. The trees require year-round care, and it takes five years from seed to fruit until they're ready for harvest. Thanks to expert citrus growers like the Bay family though, Sumo Citrus have flourished in California. Don and his son Darren worked together through trial and error to perfect their crop of Sumo Citrus. Darren is now an expert on cultivating this famously temperamental fruit, and his son Luke is learning from him every step of the way.

Don, Darren and Luke BayAll photos courtesy of Sumo Citrus

"Luke's been involved as early as he could come out," Darren said in a YouTube video.

"Having both my son and grandson [working with me] is basically what I've dreamt about," said Don. "To have been able to develop this orchard and have them work on it and work with me — then I don't have to do all the work."

Down the road from the Bay farm, Kellie Neufeld's family turned empty farmland into a thriving Sumo Citrus crop in just six years. They've spent every week during those six years tirelessly working on it and watching it grow. "Sumo Citrus is what we're leaving behind," Kellie said in a video. "It's what we're leaving to our kids."

The pride she feels for what she's built with and for her family is palpable.

Kellie Neufeld (center) and her daughters

Kellie wasn't always a farm girl. Born in Orange County, she didn't get introduced to farm life until she met her husband at college. He grew up on a farm, and once they got married, he showed her the ropes. Together they have 35 years of experience growing citrus between them and relish the steps it takes to bring Sumo Citrus to market, especially harvest time.

"Harvest is the most exciting time," said Kellie. "I let my kids miss school, we come out here, I bring donuts and cookies for the pickers." Each fruit is handpicked and laid in bins rather than tossed in large carts to keep them in prime shape for market. It's a laborious job, but Kellie and her family wouldn't have it any other way. They're determined to protect their product from harvest to market.

Julie Imbimbo of Strathmore, CA has also made growing Sumo Citrus a lifetime endeavor, even when life got particularly hard. She worked on the farm at Paradise Acres with her husband until 2015 when he passed away from cancer. Even after he was gone, she continued cultivating without him, determined to keep his contribution alive.

Julie Imbimbo

"It was extremely important to me that this was his legacy," Julie said in a YouTube video. "It broke my heart that he never got to see [his fruit] being harvested. I made the decision. This was going to be my life. And our life. And my connection with him."

This love, care and dedication go into each Sumo Citrus you find at the store. It's why the mandarin hybrid with a knot on the top has garnered a sizable following from citrus fans. Not only is it delicious and easy to eat, but there's no mess, so you can take it with you wherever you go and not worry about a juice explosion.

If you're looking to develop a healthy snacking habit, there's no better moment. Sumo Citrus is only in season from January through April, so now's the time to stock up. Start the new year right with an enormous, super-sweet fruit like nothing else out there, grown by people who've dedicated their lives to perfecting it.

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This family’s journey to adoption demonstrates the transformative power of love ›

Our favorite giveaway is back. Enter to win a free, fun date! 🌊 💗

It's super easy, no purchase or donation necessary, and you help our oceans! That's what we call a win-win-win. Enter here.

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Our love for the ocean runs deep. Does yours? Enter here!

This Valentine’s Day, we're bringing back our favorite giveaway with Ocean Wise. You have the chance to win the ultimate ocean-friendly date. Our recommendation? Celebrate love for all your people this Valentine's Day! Treat your mom friends to a relaxing spa trip, take your best friend to an incredible concert, or enjoy a beach adventure with your sibling! Whether you're savoring a romantic seafood dinner or enjoying a movie night in, your next date could be on us!

Here’s how to enter:

Go to upworthy.com/oceandate and complete the quick form for a chance to win - it’s as easy as that.
P.S. If you follow @oceanwise or donate after entering, you’ll get extra entries!

Here are the incredible dates:

1. Give mom some relaxation

She’s up before the sun and still going at bedtime. She’s the calendar keeper, the lunch packer, the one who remembers everything so no one else has to. Moms are always creating magic for us. This Valentine’s Day, we’re all in for her. Win an eco-friendly spa day near you, plus a stash of All In snack bars—because she deserves a treat that’s as real as she is. Good for her, kinder to the ocean. That’s the kind of love we can all get behind.

Special thanks to our friends at All In who are all in on helping moms!

2. Jump in the ocean, together

Grab your favorite person and get some much-needed ocean time. Did you know research on “blue spaces” suggests that being near water is linked with better mental health and well-being, including feeling calmer and less stressed? We’ll treat you to a beach adventure like a surfing or sailing class, plus ocean-friendly bags from GOT Bag and blankets from Sand Cloud so your day by the water feels good for you and a little gentler on the ocean too.

Special thanks to our friends at GOT Bag. They make saving the ocean look stylish and fun!

3. Couch potato time

Love nights in as much as you love a date night out? We’ve got you. Have friends over for a movie night or make it a cozy night in with your favorite person. You’ll get a Disney+ and Hulu subscription so you can watch Nat Geo ocean content, plus a curated list of ocean-friendly documentaries and a movie-night basket of snacks. Easy, comfy, and you’ll probably come out of it loving the ocean even more.

4. Dance all day!

Soak up the sun and catch a full weekend of live music at BeachLife Festival in Redondo Beach, May 1–3, 2026, featuring Duran Duran, The Offspring, James Taylor and His All-Star Band, The Chainsmokers, My Morning Jacket, Slightly Stoopid, and Sheryl Crow. The perfect date to bring your favorite person on!

We also love that BeachLife puts real energy into protecting the coastline it’s built on by spotlighting ocean and beach-focused nonprofit partners and hosting community events like beach cleanups.

Date includes two (2) three-day GA tickets. Does not include accommodation, travel, or flights.

5. Chef it up (at home)

Stay in and cook something delicious with someone you love. We’ll hook you up with sustainable seafood ingredients and some additional goodies for a dinner for two, so you can eat well and feel good knowing your meal supports healthier oceans and more responsible fishing.

_{^{Giveaway ends 2/15/26 at 11:59pm PT. Winners will be selected at random and contacted via email from the Upworthy. No purchase necessary. Open to residents of the U.S. and specific Canadian provinces that have reached age of majority in their state/province/territory of residence at the time. Please see terms and conditions for specific instructions. Giveaway not affiliated with Instagram. More details at upworthy.com/oceandate}}

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planet

Pets

Vet demonstrates 'squish the cat' method of safe cat handling in delightfully helpful video

There's a reason Dr. Burstyn's "How to pick up a cat" video has been viewed 23 million times.

cats, pets, cat handling, veterinarian, feline behavior

Helpful Vancouver Vet/YouTube

Handling a cat may seem like a delicate matter, but being delicate isn't actually the way to go.

If you've ever tried to make a cat do something it doesn't want to do, you've likely experienced the terror that a cat's wrath can invoke. Our cute, cuddly feline friends may be small, but the razor blades on their feet are no joke when they decide to utilize them. Even cats who love us can get spicy if we try to manhandle them, so we can imagine how things will go with cats who don't know us well. But sometimes it's necessary to handle a cat even if it's resistant to the idea.

This is where Vancouver veterinarian Dr. Uri Burst yn comes in. His "How to pick up a cat like a pro" video, in which he demonstrates a few ways of picking up and handling a cat, has been viewed over 23 million times since he shared it in 2019. Unlike many viral videos, it's not humorous and nothing outrageous happens, but the combo of Burstyn's calm demeanor and his repeated instructions to "squish that cat" has endeared him to the masses.

- YouTube www.youtube.com

The video truly is helpful; he shows the ways to pick up a cat that make them feel the most secure using his cats, one-year-old Claudia and 14-year-old Mr. Pirate. He explains that cats spook very easily and it's best to introduce yourself to them gently. Let them sniff your fingers, keeping your fingers curled in, and once they've sniffed you, you can often give them a light rub on the cheek or under the chin.

Picking them up is a different story. The reason many cats will claw or scratch you when you try to pick them up is because they feel unsupported or unsafe, so they'll scramble around trying to get some footing. Burstyn shows how he picks up Claudia with one hand under the chest and one hand under her abdomen. If he needs to carry her around, he squishes her into his body so she feels "nice and supported." He may even put a hand under her front paws.

cats, pets, cat handling, veterinarian, feline behavior Cats can be finicky about how they're held. Photo credit: Canva

Then came the best part of the video: "Squish That Cat"

"Now if we do have a cat who's trying to get away from us?" Burstyn said. "We always squish that cat. If you're trying to hold the cat down, whether it's to trim their nails or to give them a pill, or whether you just want to have a cat not run off for a moment, squish that cat. All you need to know about cat restraint is to squish that cat."

Burstyn explains that cats generally feel very secure being squished, even if they're really scared.

"Sometimes cats come to me in the clinic, and they're quite afraid," he said. "And you just gently squish them, and they'll sit there and kind of not hurt themselves, not hurt us. Just hang out and let us do our thing."

He demonstrated putting a towel over the cat, explaining, "If you have a towel handy, this is one of the best cat restraint tools around. You can just throw a towel on the catty and squish her with the towel, that way they won't get a claw into you if they are scrambling about a bit. Very safe and gentle, and generally cats are very, very happy to be squished like that."

cats, pets, cat handling, veterinarian, feline behavior Squish that cat. Photo credit: Canva

Dr. Burstyn also showed how to do a "football hold," tucking the cat under your arm with them facing backwards. "So this is kind of an emergency way if you really need to carry a cat somewhere in a hurry," he said. Scooping up Claudia, he explained, "Little head's under your arm, butt in your hand, and you squish her tight to your body. And with that little football carry, you can basically hold a cat very securely and very safely, because it's really hard for them to rake you with their hind legs."

If you're worried about over-squishing your cat, Dr. Burnstyn says don't. "You don't have to worry about hurting a cat," he said. "They're very, very tough little beasts. You know, just squishing them against your body's never going to do them any harm. In fact, they tend to feel more safe and secure when they're being held tightly."

Dr. Burnstyn also demonstrated how to pick up and set down a "shoulder cat" who insists on climbing onto people's shoulders and hanging out there, as Mr. Pirate does. It's highly entertaining, as Mr. Pirate is a big ol' chonky kitty.

@yozron
she loves my shoulders i guess #catcore #kittendad #kittensoftiktok #cat #fyp

People in the comments loved Dr. Burnstyn's demonstration, with several dubbing him the Bob Ross of veterinary medicine. Even people who don't have cats said they watched the whole video, and many loved Claudia and Mr. Pirate as well.

"This is just proof that cats are liquid."

"12/10 cat. Excellent squishability."

"So essentially, cats love hugs? That's the most wonderful thing i've heard all day."

"This cat is so well mannered and looks educated."

"Mr Pirate is an absolute unit."

"S q u i s h . T h a t . C a t ."

"I need 'Squish that cat' shirt.

"Dang, that actually helped with my female cat. She has been through at least two owners before me and had some bad expriences which obviously resulted in trust issues. She has now been with me for two years and it had gotten loads better, but she still did not want me to hold her. Normally I simply would have let her be, but for vet visits and such it was not an ideal situation. But then I saw this video and tried to squish the cat. And she loves it! She is turning into quite the snuggly bug. Thank you!"

So there you go. When all else fails, squish that cat and see what happens.

You can follow Dr. Burstyn on YouTube at Helpful Vancouver Vet.

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pets

Nature

First-of-its-kind study reveals a potential 'seventh sense' in humans: Remote touch

It turns out we have a lot in common with shorebirds.

science, scientific research, remote touch, human touch, five senses, sixth sense, seventh sense, shorebirds, tactile foraging

Photo credit: Canva

A person moves their hand through sand.

Humans have five main senses, of course, and there's even strong scientific agreement about a sixth: proprioception, or the ability to sense where our limbs are in space. But new research suggests we may also have a "seventh sense." Scientists are calling it "remote touch."

A study out of Queen Mary University of London (QMUL) recently set out to examine how humans compare to common shorebirds like sanderlings, sandpipers, and plovers.

These birds are masters at finding prey hidden in the sand. In fact, their survival depends on it. By sticking their beaks into the sand, they use a tactile foraging system finely tuned to detect subtle vibrations and pressure changes, alerting them to food sources they can't see, smell, or hear.

science, scientific research, remote touch, human touch, five senses, sixth sense, seventh sense, shorebirds, tactile foraging A sanderling looks for food. Photo by Joshua J. Cotten on Unsplash

The researchers had a hunch that humans might possess a similar ability and decided to put it to the test. They buried small cubes in a container of sand and asked participants to gently move their fingers around. Volunteers were told to stop when they felt they were close to touching or finding a cube, but before actually making physical contact with it.

Surprisingly, the results showed that humans were quite adept at sensing the object's presence before they could touch it.

"Participants were able to perceive extremely small shifts in the sand caused by the buried object," QMUL wrote on SciTechDaily. "This level of sensitivity comes close to the theoretical physical limit for detecting mechanical reflections in granular material, where moving sand subtly changes direction or resistance when it encounters a stable surface beneath it."

On average, the human participants in the study were about 70 percent accurate at detecting the hidden cube without actually touching it.

science, scientific research, remote touch, human touch, five senses, sixth sense, seventh sense, shorebirds, tactile foraging Humans' sense of remote touch has never been put to the test before. Photo by Juli Kosolapova on Unsplash

We've known for a long time that humans can be very sensitive to subtle changes in heat, pressure, and sensation.

For example, it's been a common party trick among kids for decades. One person closes their eyes while another slowly moves a finger toward the center of their forehead. Usually, the person with their eyes closed can sense when the finger is close, even before it actually makes contact. There might be a tingling, tickling, or light buzzing feeling.

However, research from QMUL shows just how advanced our remote touch abilities really are. To add further context for how finely tuned humans' remote touch ability is, the researchers then tested specially designed robots on the same task.

The robot, armed with tactile sensors, was able to detect the hidden cube from farther away than humans, but it was far less accurate overall, with just 40 percent precision.

The implications of this first-of-its-kind study are vast. For example, we may be able to better train robots based on what we learn about humans' extraordinarily fine-tuned sense of touch.

"The discovery opens possibilities for designing tools and assistive technologies that extend human tactile perception," said Zhengqi Chen, a PhD student at QMUL's Advanced Robotics Lab. "These insights could inform the development of advanced robots capable of delicate operations, for example locating archaeological artifacts without damage, or exploring sandy or granular terrains such as Martian soil or ocean floors. More broadly, this research paves the way for touch-based systems that make hidden or hazardous exploration safer, smarter, and more effective."

More immediately, it's always amazing to discover new things about the human body and how it works. Our sense of touch, in particular, is incredibly complex and fascinating. Did you know that the "phantom touch illusion" can cause people to experience physical sensations when they aren't being touched at all? Or that amputees sometimes feel phantom pain coming from a limb that no longer exists?

- YouTube www.youtube.com

According to the researchers, remote touch has never been studied in humans before, and we're truly only scratching the surface when it comes to understanding this extraordinary ability. It's also exciting to think about what an eighth sense might one day turn out to be.

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science

Education

Neuroscientists say a simple trick will help you learn any new skill a lot faster

Learning a new skill? Here's how to quickly level-up.

guitar, learning a skill, neuroscience, music, exposure, passive exposure, gardening

via Andrea Piacquadio/Pexels

A woman learning how to play guitar.

Learning a new skill, such as playing an instrument, gardening, or picking up a new language, takes a lot of time and practice, whether that means scale training, learning about native plants, or using flashcards to memorize new words. To improve through practice, you have to perform the task repeatedly and receive feedback so you know whether you’re doing it correctly. Is my pitch correct? Did my geraniums bloom? Is my pronunciation understandable?

However, a new study by researchers at the Institute of Neuroscience at the University of Oregon shows that you can speed up these processes by adding a third element to practice and feedback: passive exposure. The good news is that passive exposure requires minimal effort and is enjoyable.

"Active learning of a... task requires both expending effort to perform the task and having access to feedback about task performance," the study authors explained. "Passive exposure to sensory stimuli, on the other hand, is relatively effortless and does not require feedback about performance."

woman reading, woman book, young woman, studying, new skills A woman reading a book.via Canva/Photos

How to pick up new skills faster?

So, if you’re learning to play the blues on guitar, listen to plenty of Howlin’ Wolf or Robert Johnson throughout the day. If you’re learning to cook, keep the Food Network on TV in the background to absorb some great culinary advice. Learning to garden? Take the time to notice the flora and fauna in your neighborhood or make frequent trips to your local botanical garden.

If you’re learning a new language, watch plenty of TV and films in the language you are learning. The scientists add that auditory learning is especially helpful, so listen to plenty of audiobooks or podcasts on the subject you’re learning about.

But, of course, you also have to be actively learning the skill as well by practicing your guitar for the recommended hours each day or by taking a class in languages. Passive exposure won't do the work for you, but it's a fantastic way to pick up things more quickly. Further, passive exposure keeps the new skill you're learning top-of-mind, so you're probably more likely to actively practice it.

What is passive exposure?

Researchers discovered the tremendous benefits of passive exposure after studying a group of mice. They trained them to find water by using various sounds to give positive or negative feedback, like playing a game of “hot or cold.” Some mice were passively exposed to these sounds when they weren't looking for water. Those who received this additional passive exposure and those who received active training learned to find the water reward more quickly.

gardening, woman gardening, gardening shears, leaning gardening, weeds A woman tending to her garden.via Canva/Photos

“Our results suggest that, in mice and in humans, a given performance threshold can be achieved with relatively less effort by combining low-effort passive exposure with active training,” James Murray, a neuroscientist who led the study, told University of Oregon News. “This insight could be helpful for humans learning an instrument or a second language, though more work will be needed to better understand how this applies to more complex tasks and how to optimize training schedules that combine passive exposure with active training.”

The one drawback to this study was that it was conducted on mice, not humans. However, recent studies on humans have found similar results, such as in sports. If you visualize yourself excelling at the sport or mentally rehearse a practice routine, it can positively affect your actual performance. Showing, once again, that when it comes to picking up a new skill, exposure is key.

The great news about the story is that, in addition to giving people a new way to approach learning, it’s an excuse for us to enjoy the things we love even more. If you enjoy listening to blues music so much that you decided to learn for yourself, it’s another reason to make it an even more significant part of your life.

- YouTube www.youtube.com

This article originally appeared last year.

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neuroscience

Art

92-year-old former ballet dancer with dementia wrote a poem that got us all wrecked

What a beautiful gut punch.

ballet dancer, dementa, ballerina, poetry, poem

Photo credit: Canva

"I am still a dancer made of song."

What makes poetry poetry? There are certain technical elements that a poem might include, like rhyme and meter, but plenty of poetry doesn't follow any structural rules.

Perhaps the best definition of poetry comes from Emily Dickinson, who wrote, “If I feel physically as if the top of my head were taken off, I know that is poetry.” A good poem hits you in your brain, your heart, and your gut all at once. And one short poem that packs an incredibly moving punch has come from an unlikely source—an elderly woman with dementia.

Poet Joseph Fasano shared a message from a fan who shared that they used one of Fasano's poetry prompts with their mother, a 92-year-old former ballet dancer living with dementia. The mother was excited to write a poem, and they slowly worked through the prompt together aloud.

This poem was the result:

"Let the days be warm

Let the fall be long.

Let every child inside me find her shoes

and dance wildly, softly, toward the world.

I have a story I have never told

Once, when I was small,

I looked up at the sky and saw the wind

and knew I was a dancer made of song.

I am still a dancer made of song."

Wow. What a testament to the power of poetry to reach beyond our usual modes of communication, which dementia so cruelly disrupts. In a few simple lines, we're able to see this woman as she might see herself, as the human living under the veils of age and disease: "I am still a dancer made of song."

Poetry prompts can help people express themselves in ways they otherwise couldn't

The person who shared the poem thanked Fasano for "helping people find their voices," which is exactly what his book of poetry prompts, "The Magic Words: Simple Poetry Prompts That Unlock the Creativity in Everyone," was meant to do.

magic words, joseph fasano, poetry prompts, poems, creativity "The Magic Words" is a book of poetry prompts from Joseph Fasano. assets.rebelmouse.io

In the book's introduction, Fasano shares that he'd been invited to speak to a class of second graders in New Jersey in 2022 to share "the craft and magic of poetry." As part of his efforts, he came up with a poetry prompt that could "help guide their imaginations" and "unlock the images, thoughts and feelings inside them, without asking them to worry about how to structure a poem." He called the results "astonishing." When he shared one of the students' poems on social media, it and the prompt took off like wildfire, as people who never thought of themselves as poets felt empowered to share their imaginations within that framework.

From 7-year-olds to 92-year-olds, anyone can benefit from the self-expression that poetry facilitates, but many people feel hesitant or intimidated by the idea of writing a poem. Fasano writes, "Poetry is what happens when we let ourselves be," and this idea seems so clear in the former dancer's poem above. Dementia can create roadblocks, but poetry provides a different avenue of communication.

dementia, alzheimer's, elder care, caregiving, arts for dementia People with dementia are still themselves deep down. Photo credit: Canva

The arts can be a powerful tool for people with dementia

Using poetry to help dementia patients communicate and express themselves isn't just wishful thinking. Studies have demonstrated that cultural arts interventions, including poetry specifically, can be beneficial for people with dementia. In fact, the Alzheimer's Poetry Project (APP) aims to use poetry as a means of improving the quality of life of people living with dementia by facilitating creative expression. "We do not set boundaries in our beliefs in what possible for people with memory impairment to create," the APP website states. "By saying to people with dementia, we value you and your creativity; we are saying we value all members of our community."

Poet Gary Glazner founded APP and shared a story with WXPR radio about how he came up with the idea while studying poetry at Sonoma State University:

“I applied for a grant and got a grant to work at an adult care program. The moment I love to share with people is there was a guy in the group, head down, not participating and I said the Longfellow poem. ‘I shot an arrow into the air’ and his eyes popped open and he said, ‘It fell to earth I know not where.’ And suddenly he was with us and participating. It was just this powerful moment to see how poetry could be of use to elders but specifically with people with dementia."

dementia, alzheimer's, elder care, caregiving, arts for dementia Caregivers try many different ways to communicate with people living with dementia.Photo credit: Canva

Another initiative, Arts 4 Dementia, does poetry workshops with people in early stages of dementia.

"'Poetry allows freedom of expression and can add warmth and depth to what may start as prose," Arts 4 Dementia CEO Nigel Franklin told the Alzheimer's Society. "Through poetry, participants access certain images or memories from their lives, and build these fragments together. Older people living with dementia often learnt poems off by heart as a child, and many of these poems are still accessible. Our participants have early-stage dementia, so while short-term memory may be diminished, many skills can be retained. They are welcome to read poetry (at their own pace) or ask their companion to read and perhaps write what they have created. We give participants time to answer—we don't answer for them—and above all, we show respect and we're never patronising."

Whether we read it, write it, speak it, or hear it, poetry has the power to reach people of all ages and stages of life in all kinds of mysterious ways.

You can follow Joseph Fasano on Twitter and Instagram, and find his books on Amazon.

This article originally appeared two years ago and has been updated.

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arts

Education

How do you know someone is intelligent? Here are 15 'subtle signs' they're very smart.

"They are okay with being perceived as 'stupid' by asking questions."

smart, intelligent, intelligence, signs of intelligence, very smart, signs you're smart

Photo credit: Canva

People share the subtle signs that they know someone is incredibly smart and intelligent.

Intelligence is not always overt. Often, people with intelligence can fly under the radar. Smart people's actions can speak louder than words—and they can be hard to spot.

A curious Redditor named Occyz wanted to know how people can tell if someone is very smart by asking them to share the “subtle” signs that someone is very intelligent.

For example, according to the psychological principle known as the Dunning-Kruger effect, there is a big confidence chasm between highly intelligent people and those who are not. Low-IQ people often overestimate what they know about topics they need to familiarize themselves with. Conversely, people with high IQs underestimate their knowledge of subjects in which they are well-versed.

- YouTube www.youtube.com

15 “subtle” signs that someone is highly intelligent

1. They admit their mistakes

"When someone can admit a mistake and they know they don’t know everything."

2. Great problem-solvers

"They're very good at problem-solving. Even if it's something they have no experience with they always approach the problem from the right angle."

3. They appreciate nuance

"'I can hold two opposing ideas in my head at the same time.' Anyone who is willing to do that is intriguing to me. Especially with polarizing issues. They might actually be interesting to talk to."

intelligent, intelligent people, smart people, smart, thoughtful Intelligent people are thoughtful.Photo credit: Canva

4. They say 'I don't know'

"I like to call it being smart enough to know how stupid you are."

"100% this. I have a good friend who is a teaching professor at Cambridge. He is acutely aware of how ‘little’ he knows about areas outside his specialization."

5. They have self-doubt

"They struggle with imposter syndrome. Dumb people always think they’re [great]."

"It can happen but I’ve met plenty who don’t really doubt themselves. Instead, they take not knowing or not having any experience as an opportunity, just like people go down interesting internet rabbit holes. Really smart people can view mistakes as opportunities for growth and inexperience as an opportunity to gather new experiences."

The great American poet and novelist Charles Bukowski once wrote, “The problem with the world is that the intelligent people are full of doubts and the stupid ones are full of confidence,” and according to science, he’s correct.

“Ignorance is associated with exaggerated confidence in one’s abilities, whereas experts are unduly tentative about their performance,” Stephan Lewandowsky, Chair of Cognitive Psychology at the University of Bristol, writes for the World Economic Forum. “This basic finding has been replicated numerous times in many different circumstances. There is very little doubt about its status as a fundamental aspect of human behavior.”

6. They ask questions

"They are okay with being perceived as 'stupid' by asking questions — if we hold back in fear, we'll never truly learn. Plus, it's a good way to show others it's ok to question things if you don't understand — better off if we're on the same page instead of hoping things work out without being informed."

intelligent, intelligence, intelligent people, ask question, ask questions, asking questions People who ask questions are often more intelligent.Photo credit: Canva

7. They love a challenge

"They feel challenged rather than threatened by new things, problems, ideas..."

"'I don't know' is the beginning of a puzzle, not the conclusion."

8. They know their audience

"They can adapt their communication style — vocabulary, tone, content, etc — to fit the situation and people they’re talking to, and it seems completely natural."

"It's a bit past code-switching, though code-switching is a part of it. Being able to explain complex thoughts in simpler terms based on audience demonstrates your understanding. If the only people who can understand you are fellow people with the same educational exposure as you, you just have knowledge, not intelligence."

9. They can simplify big ideas

"I consider someone intelligent if they're able to explain something incredibly complicated in simpler and more readily understood terms."

"Fantastic teachers can make learning nearly effortless."

simplify ideas, simplify big ideas, concise, concise communication, intelligent, intelligence People who can simplify big ideas concisely are more intelligent.Photo credit: Canva

10. They listen to people they disagree with

"Someone who can understand someone’s opposing view without having to agree with it or get angry over it."

11. They're humble

"They don't continually need to tell people how intelligent they are."

"At a certain point, they realize they are smarter at certain things than other people, but they understand the importance of being humble."

12. They take a moment

"They pause to think about a novel question instead of instantly blurting out an answer. Sometimes people think it means they've been 'stumped' and claim victory. No, they're thinking, analyzing, and formulating a reply."

This idea is backed up by science. A study published by IFL Science found that people who score high on intelligence tests answer easy questions quickly. However, they spend more time on complex questions than their less intelligent peers. They have the intelligence to wait until their entire brain has grappled with a problem before answering.

"In more challenging tasks, you have to store previous progress in working memory while you explore other solution paths and then integrate these into each other,” said lead author Professor Michael Schirner. “This gathering of evidence for a particular solution may sometimes take longer, but it also leads to better results.”

13. They're well-spoken

"I usually find that creativity, humor, and verbal acuity are good signs of intelligence. I generally see lack of empathy, low openness, and seeing the world in absolutes as signs of low intelligence."

14. Dry sense of humor

"Pulling it off requires an observant, quick wit with a nonchalant delivery that almost downplays its own cleverness. Like it means their immediate passing thoughts are often profound enough to be very funny without any real effort."

15. They are great storytellers

"They craft narratives for themselves and for others that are compelling, that make the world make sense, that invigorate and install a goal, a mission."

This article originally appeared two years ago. It has been updated.

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