The surprisingly genius design of common zippers and why so many have ‘YKK’ on the pull tab

YKK stands for Yoshida Kōgyō Kabushikikaisha.

Man zipping a fleece sweatshirt
Zipper design is genuinely genius.Photo credit: Canva

Between clothing, outerwear, handbags, and cushion covers, most of us have no shortage of zippers in our households. They’re so ubiquitous that we probably don’t give them much thought (until one of them stops working properly, of course).

But zippers are surprisingly fascinating, from their storied history to their truly genius design. Veritasium created a video explaining how zippers work, how they were invented, and why so many have the letters “YKK” on them, which you can watch here:

Host Gregor Čavlović starts us off with a remarkable fact: “We’ve made more zippers than there are stars in the Milky Way.” Wow. But how did we get here?

It all began with a not-so-great inventor who knew how to sell an idea

In the late 1800s, American engineer Whitcomb Judson decided that fastening buttons and hooks one by one was entirely too tedious. He came up with a zipper-like device for shoes that would automatically connect hook-and-eye fasteners. He received a patent, but the device didn’t work very well. Still, he didn’t let that minor detail deter him.

“In 1893 at the Chicago World’s Fair, he presented this fastening device as the next big thing, claiming that in no time at all, this would replace buttons and laces,” says Čavlović. “And not just on shoes, but on all sorts of garments. A few wealthy investors actually believed it. So with their backing, the Universal Fastener Company was born.”

Whitcomb Judson and his patent for his clasp locker device that came before the modern zipper
Whitcomb Judson’s clasp locker device was a precursor to the modern zipper. Photo credit: Images in the public domain

But it would take another decade for a usable zipper-like product to come from Judson’s company. They had made an automatic fastener for women’s skirts, but even that was a bust. The device jammed constantly and couldn’t be washed with the garment, meaning it had to be removed before each wash and sewn back in afterward. The company struggled to retain customers and fell into debt.

How a manager’s “gorgeous” daughter played a major role in the invention of the modern zipper

In 1906, 25-year-old Swedish engineer Gideon Sundback joined Judson’s floundering company. Sundback may or may not have had a particular affinity for fasteners, but he did have an affinity for Elvira, the “absolutely drop-dead gorgeous” daughter of one of the company’s managers.

Sundback took the job to get closer to Elvira, and it worked. They fell in love and married, and in the meantime, Sundback made minor improvements to Judson’s fastener design. Tragically, Elvira fell ill and died soon after giving birth to their daughter. Sundback was devastated.

To deal with his grief, he threw himself into his work. He eventually tossed Judson’s fastener idea completely and came up with a “separable fastener” design of his own. Patented in 1914, Sundback’s design is nearly identical to zippers today.

Gideon Sundback and his patent for his zipper design
Gideon Sundback and his zipper patent. Photo credit: Images in the public domain

How a zipper (aka “the hookless hooker”) actually works

Sundback’s design was fairly simple, but ingenious—so ingenious, in fact, that manufacturing capabilities at the time were no match for it. He also had to design the machinery to produce the zipper.

(You really have to watch the video to see how the machine was designed and how a zipper works. The folks at Veritasium even created a large-scale model to make the mechanism easier to see.)

Finally, the Universal Fastener Company had created a commercially viable product. They initially called it a “hookless hooker,” which, thankfully, lasted only a blip. They ultimately went with a less eyebrow-raising name: the “hookless fastener.”

The word “zipper” actually came from B.F. Goodrich Company (yes, the tire company), after it used the fastener in rubber boots it manufactured. It called them Zipper boots, after the “zip” sound they made when used. The boots were a hit, and the name stuck—eventually becoming the common term for the hookless fastener.

What’s the deal with “YKK” being on so many zipper pulls?

If you check the zippers in your home, there’s a good chance you’ll find the letters “YKK” on many of the pull tabs. Why?

YKK stands for Yoshida Kōgyō Kabushikikaisha, the Japanese company that manufactures more zippers than any other in the world—close to 10 billion each year. YKK is the undisputed G.O.A.T. of zippers.

That story began in 1933 with Tadao Yoshida, a salesman in Japan whose company had gone under. He found a pile of unsold zippers among the company’s leftover inventory, bought them, and started his own zipper business.

His goal was to make zippers that never failed. That foresight into how frustrating an unreliable zipper is for a consumer proved invaluable. After some setbacks that could have ended his business ambitions, Yoshida became the leading manufacturer of zippers in the world. And he kept on honing the quality and efficiency of the manufacturing process, eventually bringing every part of the process in-house.

Red sweater with a YKK zipper closeup
YKK zippers are seen all over the world. Photo credit: Cornischong/Wikimedia Commons

Yoshida had created a zipper juggernaut. Today, YKK makes over 7,000 types of zippers and dominates the global zipper market. It also operates under an endearing philosophy referred to as “The Cycle of Goodness,” which basically boils down to: “No one prospers without rendering benefit to others.”

Who knew the basic zipper had such a fascinating history?

You can follow Veritasium on YouTube for more fascinating insights into innovation and ideas.

  • A man who wanted to ‘see music’ paired a piano with bioluminescent algae. It’s magical to watch.
    Bioluminescent algae respond when the piano keys are played.Photo credit: HTX Studio/YouTube

    Music is meant to be heard and not seen, right? Sure, we can watch musicians play instruments, and we can see music notation on paper. But that’s not the same as seeing music itself.

    A young man named He Tongxue from HTX Studio, a team of DIY innovators from Hangzhou, China, wanted to be able to “see music.” He had just started learning piano and felt like the visible dimension was missing. There are plenty of computer programs that create digital visual effects with music, of course. But the goal was to make music visible in real life.

    It took the studio three years, four prototypes, and endless tests to come up with just the right combination of elements. They wanted something that would rise from the piano and light up when the keys were pressed.

    “Our first thought was smoke,” he said. They figured they could line up smoke machines that would be triggered by the piano keys and use lasers to light up the smoke as it rises.

    The studio built a prototype, and at first, it looked pretty cool. But after playing the piano for a few minutes, the cool factor wore off. He later described it as “a disaster.”

    “The smoke drifts everywhere,” he said. “You can’t tell which light matches which note. It feels like a genie is coming out. And after a while, it feels like someone is barbecuing inside the piano.”

    They wanted the smoke to rise in chunks, like solid musical notes, instead of spreading out. That led them to the idea of vortex rings. Essentially, they could make smoke rings that would give the visible “notes” more structure.

    music, smoke, innovation, tech
    A vortex ring of smoke floats through the air. Photo credit: Canva

    A second prototype was made to test out this idea. And it did look really cool…at first. The vortex rings worked, but there was too much extraneous smoke that eventually built up and made it hard to see the rings. The contraptions that made the rings were also too large to make separate ones for all 88 keys of the piano, and making them smaller rendered them unusable.

    Back to the drawing board again.

    Since a vortex ring is essentially rotating fluid, they shifted to different fluids: water and paint. They created yet another piano prototype that would shoot paint vortex rings into water. Yet again, cool at first, but soon the water simply clouded up as the paint rings dissipated. They tried using oil paints, which wouldn’t dissolve in water, but that also disappointed. Oil paint didn’t form rings, but rather broke apart into small spheres in the water.

    Bubbles, water, tech, visual
    When smoke didn’t work, the studio turned to water. Photo credit: Canva

    However, the spheres gave them the idea of simply using droplets. They created a piano that would push up a droplet of colored glycerin into the water tank with each note played. Lights would illuminate them.

    The idea was solid, but the execution left something to be desired. The beauty of the lit-up droplets didn’t extend throughout the tank. The droplets drifted, and attempts to rein them in with glass tubes ruined the magical effect.

    “By this point, the project had dragged on for two years,” he said. “We had tried everything we could think of. I honestly didn’t know what I was to do. We’ve abandoned projects before. But never one that consumed this much time, energy, and effort from almost everyone in the studio.”

    Then disaster struck. One night, the glass tank shattered under the water pressure, destroying the entire system.

    Watch the full story here:

    “If the universe was telling me to stop, this felt like the sign,” he said. But in the midst of significant setbacks and creeping self-doubt, the idea of turning to nature arose. What if they used bioluminescent algae, which light up all on their own?

    “Around the world, you can see this blue glow in coastal waters,” he said. “It’s caused by a reaction between luciferin and luciferase when the algae are stimulated. We didn’t spray algae into water. We filled the entire tank with them, then disturbed them with bubbles so they would glow all the way to the surface.”

    He and his studio mates did it. No AI. No digital effects. Real-life, 3D visible music with an assist from nature. They named it the Blue Tears Piano.

    Here’s German pianist Oskar Roman Jezior playing “Golden Hour” on it:

    You can follow HTX Studio on YouTube for more incredible innovations.

  • NVIDIA’s CEO realized the smartest people aren’t ‘technical.’ They have a totally different skill.
    NVIDIA CEO Jensen Huang speaking in 2016. Photo credit: via NVIDIA Taiwan/Wikimedia Commons

    Artificial intelligence promises to completely upend just about every facet of modern life, from how we work to education, medical care, and the design and manufacture of everyday goods. On a deeper level, it will also change how we see ourselves as humans, placing greater value on the uniquely human skills that no computer can replicate, no matter how powerful the server.

    One person who knows a great deal about that is Jensen Huang, the president and CEO of NVIDIA, a company that designs and manufactures chips for accelerated computing and AI data centers. Fortune has named Huang one of the world’s best CEOs for his leadership and innovation.

    Recently, he appeared on the A Bit Personal podcast with Jodi Shelton, who posed a big question: “Who is the smartest person you’ve ever met?”

    jensen huang, nvidia, ai, chips, huang speech, huang 2016
    NVIDIA CEOu00a0Jensen Huang. via Raysonho/Wikimedia Commons

    Who is the smartest person Huang ever met?

    At first, the question sounds like a softball. Of course, Huang might be expected to name someone with exceptional technical talent or a keen eye for design and engineering. He could even point to an important scientist or a tech leader, such as Steve Jobs. Instead, Huang argues that the most intelligent people today are those whose skills can’t be duplicated by AI.

    “I know what people are thinking, the definition of smart is somebody who’s intelligent solves [technical] problems,” Huang responded. “But I find that’s a commodity and we’re not about to prove that artificial intelligence is able to handle that part easiest, right?”

    He added that software engineers were once widely seen as the most intelligent, but AI is now challenging that idea.

    Huang says truly intelligent people know the “unknowables”

    “I think long term … and my personal definition of smart is someone who sits at that intersection of being technically astute but [has] human empathy,” Huang said. “And having the ability to infer the unspoken around the corners. The unknowables. People who are able to see around corners are truly, truly smart. To be able to preempt problems before they show up, just because you feel the vibe. And the vibe came from a combination of data analysis, first principle life experience, wisdom, sensing other people, that vibe. That’s smart. I think it’s gonna be the future definition of smart, and that person might actually score horribly on the SAT.”

    jensen huang, nvidia, ai, chips, huang speech, huang 2016
    NVIDIA CEOu00a0Jensen Huang speaking in 2023. via Wikimedia Commons

    The podcast’s Instagram post received hundreds of comments. “This is a very smart answer to make everyone sound like they have a chance of being smartest person,” one popular commenter wrote. Another joked, “Bro knows he’s the smartest person he’s ever met.”

    Ultimately, as we enter the AI era, it’s becoming clear that the edge humans have isn’t processing power, but the skills that make us most human: empathy, perception, wisdom, emotional intelligence, and the ability to read the room at both micro and macro levels. Huang understands that true human intelligence, something that can’t be created in a data center, is, for now, still the most valuable asset of all.

    Watch the full podcast interview below:

  • Guy uses a Ziploc bag to show why some things look backwards in mirrors while others don’t
    Why is text reversed in mirrors?Photo credit: Canva Photos.

    Have you ever wondered why text shows up backwards in a mirror? It’s confusing to our brains because it doesn’t seem like anything else is flipped like that. If we turn our head, it doesn’t move the opposite direction in the mirror. Or does it? After all, right-handed you is actually left-handed you in the mirror. Right? (Wait, is that right?)

    Mirrors can be confusing despite not being very complicated. A mirror image is simply a reflection of what’s in front of it. But when someone else is looking at us head on, they don’t see text in reverse, so why don’t we see what other people see when we see ourselves in a mirror?

    mirrors, mirror, how mirrors work, mirror image, text in mirrors
    Woman smiling in a mirror. u200bCanva Photos.

    (If you think this is a super stupid question with a super obvious answer, congratulations. Pat yourself on the back and scootch along so the folks who don’t fully grasp the physics of mirrors can enjoy a demonstration that makes it a little easier to understand.)

    “Why do mirrors reverse text?” asks the creator behind @humanteneleven on YouTube. “You might think it’s just a property of mirrors—they flip things from left to right—but that’s not true.” He then picks up a metal arrow to show that it points the same direction in the mirror as it does in real life. So why is the text flipped when the arrow isn’t?

    He then holds up a book to show how the text on the book cover appears backwards, just like the shirt. But when he holds up a Ziploc bag with the word “HELLO” written on it, the word shows up properly.

    Why? How?

    It’s because he had to flip the book over to see the cover text in the mirror. The baggy, on the other hand, he could just hold up and see the letters through the transparent plastic, just as we see them in real life. If he flips the baggy over like he did the book, the text shows up backwards in the mirror, just like it does in real life.

    “So it’s actually not the mirror that’s flipping anything from left to right,” he says. “It’s the human.”

    People appreciated the simple, straightforward explanation and demonstrations.

    “One of the most insightful demonstrations I’ve seen. It’s simple and explains the phenomenon. Well done!”

    “While I’ve heard this explanation many times before, I’ve only recently seen it demonstrated with text-on-transparency, which is what really makes it click. Great video!”

    “Love these sorts of demonstrations. It’s a bit of a complicated one, but I love seeing how different people’s minds work when explaining simple things like this. My kid explains it with “left is on the left, right is on the right, things aren’t flipped, they are mirrored” but it’s true that you are the one who flips things and I’ve never thought of it that way before.”

    “Oh my God, I haven’t understood explanations from physics videos about why mirrors flip but this, gosh this helps.”

    Mirrors have been hilariously befuddling people in other videos as they try to figure out how the mirror “knows” what’s behind a barrier placed in front of objects.

    Is this something all of us should probably have learned in high school? Yes. Do all of us remember everything we learned in high school? No. Does the scientific explanation make perfect sense to everyone even if it’s explained in detail? Um, no.

    Like the reversed text question, having a simplified explanation that doesn’t fully get into the nitty gritty physics and geometry of how mirrors work is helpful for some folks.

    For those who want a bit more scientific substance to their explanations, this next video does a good job of giving a bit more detail while still keeping the explanation simple. It even uses a visual diagram to explain:

    And for those who say, “This is so basic! How do people not understand this?” here’s a video that really does get into the nitty gritty physics and geometry of how mirrors work, diving into ray and wave optics, photons, wave functions, probability, and quantum mechanics. It’s only 12 minutes, and it manages to entertain while explaining, but it certainly blows the notion that understanding mirrors is super simple.

    As one commenter wrote, “I thought I understood mirrors. I understand mirrors even less now. And that’s a compliment.”

    Isn’t science fun?

    This article originally appeared last year.

  • Innovative farm in Virginia can grow 4 million pounds of strawberries on less than an acre
    Strawberries can be grown more sustainably.Photo credit: Canva
    , ,

    Innovative farm in Virginia can grow 4 million pounds of strawberries on less than an acre

    This method uses 97 percent less land and up to 90 percent less water than conventional farming.

    Question: If the average American eats 8 pounds of strawberries a year, and an average strawberry farm yields approximately 20,000 pounds of berries per acre, how many people could a 200-acre strawberry field yielding 4 million pounds of strawberries feed?

    Don’t worry, you don’t have to do the math. The answer is 500,000 people. But what if that same 4-million-pound crop, providing enough strawberries for half a million people, could be grown on just one acre instead of 200? It’s possible. You just have to go—or rather grow—up, up, up.

    Indoor vertical farm company Plenty Unlimited knows a lot about growing up. In fact, it’s their entire business model. Instead of the sprawling fields that traditional farming methods require, “vertical farms” have a much smaller land footprint, utilizing proprietary towers for growing. Plenty has used vertical farming methods to grow greens such as lettuce, kale, spinach and more for years, but now it boasts a vertical berry farm that can yield a whopping 4 million pounds of strawberries on a little less than an acre.

    Growing indoors means not being at the mercy of weather or climate unpredictability (barring a storm taking out your building), which is wise in the era of climate change. Unlike a traditional greenhouse, which still uses the sun for light, Plenty’s indoor vertical farms make use of the latest technology and research on light, pinpointing the wavelengths plants need from the sun to thrive and recreating them with LED lights. Plenty farms also don’t use soil, as what plants really need are water and nutrients, which can be provided without soil (and with a lot less water than soil requires). Being able to carefully control water and nutrients means you can more easily control the size, taste and uniformity of the berries you’re growing.

    If that sounds like a lot of control, it is, and that idea might freak people out. But when a highly controlled environment means not having to use pesticides and using up to 90% less water than traditional farming, it starts to sound like a solid, sustainable farming innovation.

    Plenty even uses AI in its strawberry farm, according to its website:

    “Every element of the Plenty Richmond Farm–including temperature, light and humidity–is precisely controlled through proprietary software to create the perfect environment for the strawberry plants to thrive. The farm uses AI to analyze more than 10 million data points each day across its 12 grow rooms, adapting each grow room’s environment to the evolving needs of the plants – creating the perfect environment for Driscoll’s proprietary plants to thrive and optimizing the strawberries’ flavor, texture and size.”

    Plenty even has its own patent-pending method of pollinating the strawberry flowers that doesn’t require bees. Just the fact that this enormous crop of strawberries will be coming from Virginia is notable, since the vast majority of strawberries in the U.S. are grown in California.

    strawberry, strawberries, strawberry farm, berry farm, farming
    Traditional strawberry farming takes up a lot of land. Photo credit: Canva

    Is Plenty’s model the farm of the future? Perhaps it’s one option, at least — though there are major questions about whether the vertical farming method is truly economically sustainable in the long run. Though Plenty had been growing diverse crops, the company completed a chapter 11 reorganization in the spring of 2025, narrowing the focus of its vertical farming model to strawberries.

    “This emergence is the start of a new, focused era for Plenty,” said Dan Malech, Plenty’s Interim CEO. “Our technology has the power to make fresh food accessible to everyone. To accelerate our impact, we are laser focused on strawberries. We’re expanding the growing capacity in the Plenty Richmond farm and pursuing opportunities to bring Plenty’s vertical strawberry farming technology to new locations through farm sales – something Plenty is uniquely positioned to offer based on its proprietary technology.”

    strawberry, strawberries, strawberry farm, berry farm, farming
    Strawberries are a wildlyu00a0popular fruit. Giphy

    Plenty is not the only vertical farm company out there, which is great. The more we grapple with the impact of climate change and outdated, unsustainable farming practices, the more innovative ideas we’ll need to feed the masses. If they can get four million pounds of strawberries out of an acre of land, what else is possible?

    This article originally appeared in February. It has been updated.


  • Ontario teen says he’ll live in ‘modular home’ invention for a year to prove it can end homelessness
    Ribal Zebian is going to test a house he designed by living in it for a year.Photo credit: @ribalzebian on Instagram

    Ribal Zebian, a student from the city of London in Ontario, Canada, already made headlines last year when he built an electric car out of wood and earned a $120,000 scholarship from it. Now, he’s in the news again for something a little different. Concerned with homelessness in his hometown, Zebian got to work creating a different kind of affordable housing made from fiberglass material. In fact, he’s so confident in his idea that the 18-year-old plans on living in it for a year to test it out himself.

    Currently an engineering student at Western University, Zebian was concerned by both the rising population of the unhoused in his community and the rising cost of housing overall. With that in mind, he conjured up a blueprint for a modular home that would help address both problems.

    Zebian’s version of a modular home would be made of fiberglass panels and thermoplastic polyethylene terephthalate (PET) foam. He chose those materials because he believes they can make a sturdy dwelling in a short amount of time—specifically in just a single day.

    “With fiberglass you can make extravagant molds, and you can replicate those,” Zebian told CTV News. “It can be duplicated. And for our roofing system, we’re not using the traditional truss method. We’re using actually an insulated core PET foam that supports the structure and structural integrity of the roof.”

    Zebian also believes these homes don’t have to be purely utilitarian—they can also offer attractive design and customizable features to make them personal and appealing.

    “Essentially, what I’m trying to do is bring a home to the public that could be built in one day, is affordable, and still carries some architecturally striking features,” he said to the London Free Press. “We don’t want to be bringing a house to Canadians that is just boxy and that not much thought was put into it.”

    Beginning in May 2026, Zebian is putting his modular home prototype to the test by living inside of a unit for a full year with the hope of working out any and all kinks before approaching manufacturers.

    “We want to see if we can make it through all four seasons- summer, winter, spring, and fall,” said Zebian. “But that’s not the only thing. When you live in something that long and use it, you can notice every single mistake and error, and you can optimize for the best experience.”

    While Zebian knows that his modular homes aren’t a long-term solution to either the homeless or housing crisis, he believes they could provide an inexpensive option to help people get the shelter they need until certain policies are reformed so the unhoused can find affordable permanent dwellings.

    @hard.knock.gospel

    What to buy for the homeless at the grocery store. 🛒 Most people get it wrong. After being there myself, these are the survival items that actually matter 💯 The 2nd to last one is about more than survival—it’s about DIGNITY. We are all one circumstance away from the same shoes 🙏 SAVE this for your next grocery run. 📌 IG@hardknockgospel Substack@ Outsiders_Anonymous #homelessness #helpingothers #kindness #payitforward #learnontiktok

    ♬ Cozy Day (Lofi) – The Machinist Beats

    Zebian’s proposal and experiment definitely inspires others to try to help, too. If you wish to lend a hand to the unhoused community in your area in the United States, but don’t know where to look, you can find a homeless shelter or charity near you through here. Whether it’s through volunteering or through a donation, you can help make a difference.

  • Does self-control equal happiness and success? A new study flips the idea on its head.
    A woman eating two donuts.Photo credit: via Canva/Photos
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    Does self-control equal happiness and success? A new study flips the idea on its head.

    “Think of well-being as the fuel that powers the engine of self-control.”

    In Western culture, there has always been the assumption that self-control lies at the root of having a successful and happy life. After all, early to bed and early to rise makes one happy, wealthy, and wise, right? We assume that the child who chooses to wait 10 minutes to eat two marshmallows rather than eat only one right away has the impulse control to succeed in life. However, a new study from Singapore shows that we may have things backward.

    Is self-control the key to happiness?

    Researchers at the National University of Singapore noted that there was little solid research demonstrating that self-control was the key to happiness and success, so they set out to test that assumption. They found that the causal relationship between self-control and happiness or success was “surprisingly weak and fraught with issues.”

    woman, silly face, tongue out, goofy girl, funny girl, funny face
    A woman having a goofball moment. via Canva/Photos

    The researchers conducted two experiments, one involving participants in China and the other in the United States. Both came back with the same results: Participants who ranked high in self-control didn’t appear to be any happier six months later. However, participants who reported high levels of “well-being” at the initial assessment showed greater self-control at the subsequent measurement.

    To put things simply, self-control doesn’t create personal well-being. People who cultivated well-being later showed improved self-control at the follow-up assessment. The key takeaway is this: If you want to achieve a goal, focus on your mental and emotional well-being first. Once that is aligned, you create the internal environment needed to take on difficult tasks. Feeling well leads to functioning well.

    Feeling well precedes functioning well

    “Instead of viewing happiness as a reward you get after achieving your goals through discipline, think of well-being as the fuel that powers the engine of self-control,” Lile Jia, an associate professor at the National University of Singapore and director of the Situated Goal Pursuit (SPUR) Lab, told PsyPost. “If you want to get better at resisting temptations, starting new projects, or sticking with good habits, a great first step is to invest in activities that make you feel happy, energetic, optimistic, and appreciative of life. Our research indicates that feeling well precedes functioning well.”

    Jia conducted a 2018 study on college students and sports that reached a similar conclusion. The question was this: Do high-achieving students take time off from their studies to watch their football or basketball teams, or is that break taken only by students with lower GPAs? The study found that high-achieving students did take time off to watch their teams, but they planned ahead by adding extra study hours in the week before games. Conversely, low-GPA students skipped the game altogether.

    The lesson of the study: More successful people still enjoy indulgences; they simply plan them in advance so they can enjoy them more than if they were last-minute decisions.

    The good news from Jia’s work is that the road to success doesn’t have to be a struggle, because the happier and healthier we are, the more successful we’ll be.

    “Instead, it can be paved with positive experiences,” Jia said. “By actively cultivating joy, engagement, and meaning in our lives, we are not just making ourselves feel better in the moment; we are also building the psychological resources we need to be more effective and successful in the future. It places the pursuit of well-being at the very center of personal growth.”

  • Time seems to speed up as we get older. A 60-second fix can slow it down.
    Time accelerates as we get older, but there are some interesting ways we can slow it down.Photo credit: via Canva/Photos

    Imagine this scenario, if you will: You’re scrolling along, minding your own business on the internet, when this little nugget comes across your timeline: “1980 and 2023 are as far apart as 1937 and 1980. Sleep tight, old fogies!”

    Wait, what? Your first reaction is, “That can’t be right,” so you pull out the calculator and do the math yourself—several times because you’re sure you must’ve missed a number somewhere each time. You remember how long ago 1937 seemed in 1980, and there’s absolutely no way that much time passed between 1980 and 2023. Buy you’re wrong. As the warped reality of time washes over you, you sit in stunned silence, contemplating the existential crisis you’ve just been thrown into.

    Why does time work this way? Why does it seem to accelerate and condense, making decades seem shorter and shorter as we age? And perhaps more importantly, how the heck do we stop time from feeling like a runaway freight train?

    Here are several theories about what causes the freight train phenomenon and what to do about it.

    Time perception is relative—and kids perceive it differently

    “Time flies when you’re having fun” is a saying for a reason. Time also drags when you’re doing drudgery and feels as if it stands still in moments of significance. And yet the ticking of seconds as they go by doesn’t change tempo. We measure it with steady, unchanging beats, but how it feels changes constantly.

    time, kids, bubbles, playing, time flies, fun, childhood
    Children playing with bubbles. via Canva/Photos

    This relativity exists in every passing moment, but it also exists in the bigger picture as well. The years felt to pass much more slowly when we were children, and by middle age they seem to pass in the blink of an eye. The pandemic gave us an even greater sense of this relativity as disruptions to our normal routines and the stress associated with the COVID-19 years messed with our sense of time. (On an odd side note, surveys show that our time perception during the pandemic varied a lot from place to place—people in some parts of the world felt that time moved more slowly, while others felt time moved more quickly.)

    According to a 2023 Hungarian study published in Nature Scientific Reports, very young children perceive time differently than older children and adults. Researchers split 138 people into three age groups—pre-kindergarten, school-age and adults 18 and over—and showed them two videos of the same duration, one that was “eventful” and one that was “uneventful.” Interestingly, the pre-K group perceived the eventful video to be longer, while the older children and adults saw the uneventful video as longer.

    The way the study participants described the length of the videos in gestures was also telling. Young children were much more likely to use vertical hand gestures, connoting volume or magnitude, to indicate a length of time than the other two age groups. School-aged kids and adults tended to use horizontal gestures, indicating time as linear, increasing with age.

    Our neural processing slows down as we age

    Professor Adrian Bejan has a theory based on how neurons process signals. As we age, our neural networks increase in size and complexity, and as a result, process visual information more slowly. That slower processing means we create fewer mental images per second than we did when we were younger, which makes time seem to slow down.

    time, time perception, science of time, aging, neural processing, youth, lifespans, female aging, woman's face
    A woman slowly ages over about 15 years. via Canva/Photos


    “People are often amazed at how much they remember from days that seemed to last forever in their youth, Bejan shared with Harvard University. “It’s not that their experiences were much deeper or more meaningful; it’s just that they were being processed in rapid fire.”

    In other words, processing the same number of mental images we did in our youth takes longer now, somewhat counterintuitively making time seem to pass more quickly. So goes the theory, anyway.

    It might simply be about time-to-life ratios

    Another popular theory about why time feels different as a child than it does as an adult is the ratio of any given day, week or year to the amount of time we’ve been alive. To a 5-year-old, a year is 20% of their entire life. For a 50-year-old, a year only is 2% of their life, so it feels like it went by much more quickly.

    time, hourglass, sunset, sand, days, cycles
    An hour glass at sunset. via Canva/Photos


    It’s also a matter of how much change has happened in that year. A year in the life of a 5-year-old is full of rapid growth, change, learning, and development. A year in the life of a 50-year-old probably isn’t a whole lot different than when they were 48 or 49. Even if there are major life changes, the middle-aged brain isn’t evolving at nearly the same rate as a child. A 50-year-old looking back at the past year will have a lot fewer changes to process than a 5-year-old, therefore the year will seem like it went by a lot faster.

    “Our perception of days, weeks, years and that kind of time seems to be especially influenced by our perspective: Are we in the moment experiencing it, or are we looking backward on time?” psychology professor Cindy Lustig told the University of Michigan.

    The key to slowing it all down? Be mindful of the present moment.

    Lustig has a point. When we are in the moment, our perception of time is much different than when we look back. So, being fully conscious in the present moment can help us rein in the freight train effect.

    One way to do that is to be mindful of your physical existence in this moment. Feel your heart beating. Feel your breath going in and out. Cornell University psychology professor Adam Anderson, Ph.D., conducted a study that found our perception of time may be linked with the length of our heartbeats. (Study participants were fitted with electrocardiograms and asked to listen to a brief audio tone. They perceived the tone as longer after a longer heartbeat and shorter after a shorter one.) He suggests starting a stopwatch, closing your eyes, and focusing on your breathing for what you think feels like a minute. Then, check your time to see how accurate your estimation was.

    A good way to focus on your breath is to pay attention to how it goes in and out of your nostrils. If, during that minute, your attention strays from your breath, focus back on the feeling of the air coming out of your nose.


    “This can give you a sense of how much your experience of your body is related to your experience of time,” Anderson told WebMD. “It will help teach you to enjoy the pure experience of time.”

    You can also use focused breathing to slow your heart rate deliberately and, in turn, slow your sense of time. “We show that slow heart rates—that is, a longer duration between heartbeats—dilates time, slowing it down,” Anderson said.

    We can also alter our perception of time by taking in novel experiences, such as traveling to new places. According to Steve Taylor, author of Making Time: Why Time Seems To Pass at Different Speeds and How to Control It, people who go on adventurous trips report that their vacations feel longer than those who choose a predictable destination. You can also make small changes to your daily routine, such as trying new foods or taking a new route home from work to expose yourself to novel stimuli and slow your perception of time.

    The key here is to see the world as if it’s constantly unfolding in front of you and that you are being born into it. As the great Bob Dylan once wrote, “He not busy being born is busy dying.” As long as we keep being born by seeing the world through fresh eyes and a sense of adventure, we’ll be busy being born, and time won’t accelerate so quickly.

    A study in 2024 found that people who do intense exercise experience a time warp, feeling like they exercised longer than they really did, so if you want to temporarily slow down time, you can push your body hard during a workout.


    Finally, try to take in the world the way you did as a small child. Take note of life’s wonders. Engage fully in whatever you’re doing. Notice details and take mental pictures as much as you can. Time passes quickly when we’re distracted, so training our attention on the here and now can help. Ultimately, we can strive to perceive time more like we did when we were little, in its full depth and magnitude, instead of a narrow, straight line.

    This article originally appeared last year.

  • Woman designs a chair specifically for half-dirty clothes to hang on, and people feel so seen
    We need a better solution for clothes that are worn but not dirty enough to wash.Photo credit: Canva

    There’s an unspoken dilemma many of us face each evening when we change into our jammies: what do we do with our clothes that aren’t really dirty but aren’t really clean? Undies and socks definitely belong in the dirty laundry bin, but what about a sweater you wore over a t-shirt just to lounge around your house? What about jeans that you’re not supposed to wash every time you wear them?

    “I’m going to go out on a limb, and I’m gonna guess that you have a chair in your bedroom where you throw the clothes that are too dirty to go back into the drawer but too clean to go into the laundry,” says inventor Simone Giertz.

    Yep, fair guess. That covered-in-worn-but-not-really-dirty clothes chair, henceforth known simply as The Chair, is a familiar sight in thousands, if not millions, of bedrooms. Some even call it a “chairdrobe.”

    “I have one of those chairs,” Giertz says. “I don’t like it. It looks messy, and I want to design a chair that is meant for throwing laundry on.”

    So she conceived of a round chair with a swiveling armrest that could serve as a rack for hanging clothes and stay hidden behind the chair. But would it look odd? How would she engineer the swivel function? Would it really be any better than The Chair that already sits in many bedrooms? She had so many questions to answer as she attempted to create a prototype.

    Watching an inventor work is really something. In the video, Giertz walks us through her process, and we see her working out ideas, questions, and conundrums in real time. She does everything herself, from the engineering to the woodworking to the upholstery. And the finished product looks like a sleek, modern chair without screaming, “Hey, I’m designed for half-dirty laundry!”

    However, when she takes it to her bedroom and demonstrates how the swivel rack works, it’s clear her version of The Chair is extraordinary. She piles on a dozen or so pieces of clothing, and when she turns the swivel so they move behind the chair, it almost looks like there’s nothing there. It’s definitely a lot neater than The Chair normally looks in a bedroom.

    Giertz was quite proud of her accomplishment.

    “I cannot believe that I managed to wing this chair together just on vibes and plywood,” she says as she sits down on it. “I wish I could just snap my fingers and that it was a product so you could buy it.”

    take my money, i'll buy it, purchase, I want it, sell it
    Sold. Giphy

    She’s not the only one. Though she said she was only joking, people in the comments gushed over her invention and seriously encouraged her to market it:

    “I’m telling you right now: you have a market for this. If you can get some sort of design patent DO IT and then see if you can collab with a furniture company that has the finances to mass produce this. I want one REALLY BADLY. This is a much classier solution than throwing my half-clean clothes on the floor of my closet.”

    “This could be an opportunity for an insane Simone Giertz x Ikea collab. I would totally buy this chair.”

    “Simone, this could actually be one of the biggest inventions of the century. The wisdom of accepting the existence of “the chair” and coming up with a solution that’s both effective and aesthetic. brilliant. You should sell it.”

    You made a thing that really is a thing. Very clever and utilitarian. No motors to move it, no gimmicks. Nicely done.”

    A good inventor sees a problem that doesn’t have a solution yet and comes up with an idea to solve it. The Chair is a universal problem, and this unique chair is a brilliant solution.

    You can follow Simone Giertz on YouTube for more cool inventions.

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