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Facts can and do change as new evidence comes to light—it’s a core part of what science is all about. As we learn more and more about how the world works, we have to update our existing bodies of knowledge. 

This does, however, mean that some information that we learned in the classroom can become outdated within our lifetimes, as members of the r/ask online community recently shared in a viral thread. We’ve collected some of these internet users’ insights about what facts have changed since they learned them in school. Scroll down to read what they had to share.

Bored Panda got in touch with the author of the viral thread, redditor u/karatass91. They were kind enough to share a few insights on facts changing over time. You'll find their thoughts as you read on.

#1

30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward "High school's gonna be the best four years of your life!" Reader, it was not the best four years of my life

astarisaslave , cottonbro studio / pexels Report

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    #2

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward You can’t carry a calculator all day!

    Heximalus , Karolina Grabowska / pexels Report

    #3

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Trickle down economics

    DntQuitYaDayJOB , energepic.com / pexels Report

    NPR points out that scientific knowledge is constantly evolving and changing. It's not just completely new facts that are discovered. Researchers also take new evidence into account and then use it to reexamine what we thought we already knew. 

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    "The key is that scientific conclusions don't change on a whim. They change in response to new evidence, new analyses, and new arguments—the sorts of things we can publicly agree (or disagree) about, that we can evaluate together. And scientific conclusions are almost always based on induction, not deduction. That is, science involves drawing inferences from premises to conclusion, where the premises can affect the probability of the conclusions but don't establish them with certainty," NPR explains why we can trust science despite facts changing.

    #4

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward If you learn well, you`ll get a good job and will have a nice future. Total BS.

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    #5

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward My teachers used to say "Video games will make you braindead." Turns out video games were all about solving puzzles and problem solving and ended up increasing the cognitive abilities and critical thinking skills for children from a young age.

    dasaigaijin , Jessica Lewis 🦋 thepaintedsquare / pexels Report

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    #6

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward The food pyramid

    drifters74 , bigbrand . / flickr Report

    Bored Panda was curious to get the OP's thoughts as to what we could all do to stay up to date with (at least some) of the changes in science. The idea is so that we don't feel like we've fallen too far behind.

    "The point here is to find reputable and reliable sources," redditor u/karatass91 said that this lies at the core of good scientific education.

    On top of that, they suggested taking on an even more direct approach to education by "establishing online connections with researchers." This way, you could be at the cutting edge of science... at least in the areas that interest you the most.

    #7

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Animals don't use tools.

    Canadianingermany , Mike R / Wikipedia Report

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    #8

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Grade school in the US, mid 1970s: We will be converting to the metric system soon.

    tlf555 , Los Muertos Crew / pexels Report

    #9

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward While I was in college biology our teacher said she was forced to teach us that cell walls were rigid because that's what the text book said but, she told us, it was not true--the phospho-lipid cell wall had just been discovered. So we learned it wrong and corrected all at the same time.

    OutOfBody88 , Monstera Production / pexels Report

    According to the OP, there probably will never be a point in time when the facts that we know about the world will never change again.

    "I don't think that the facts about the world will stop changing, since our understanding evolves with ongoing research and discoveries," they told Bored Panda.

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    #10

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward That Christopher Columbus discovered America. Just ask native Americans about this one.

    Hungry-Performer-363 , Pixabay / pexels Report

    #11

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Areas of taste on the human tongue

    prosperosniece , Pavel Danilyuk / pexels Report

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    #12

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Gen X here. We'll run out of oil by 2000.

    RredditAcct , Istiaque Hossain / pexels Report

    The author opened up to us that they never thought that their question would get so much attention on Reddit. "I know it was a good question, but never had such an expectation," they said.

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    "I think it went viral because I believe every redditor went to school and they could come up with an interesting answer," the redditor noted that the topic was something that most of us could deeply relate to.

    The reality is that we all have some knowledge blindspots. There are gaps in our knowledge that we’re not even aware of. These can range from misconceptions about common sense things to false interpretations of more complex situations.

    The best that any of us can do is to keep an open mind when we come across information that runs counter to our experiences. This means being humble enough to recognize that nobody is perfect, that everyone makes mistakes, and that we might be wrong in some cases. Scientific knowledge is rarely ever stagnant for long.

    #13

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward That your permanent record really does follow You for Life a bunch of Bologna

    confessionofanartist , cottonbro studio / pexels Report

    #14

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Nerves can’t regenerate and electron orbitals are circles. Basically, science keeps getting better and I had no idea these had changed for a long time.

    Accomplished-Bad-481 , RF._.studio / pexels Report

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    #15

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward That you have to do lots of extra curricular activities, sports, and volunteer work just to get into any colleg. Joke's on them. I went to college 10 years after high school so none of it mattered.

    greeneyes826 , Mary Taylor / pexels Report

    However, being open-minded does not mean being naive. This doesn’t mean accepting any and every piece of information that comes your way.

    As one study from 2021 pointed out, people tend to think that repeated information is more truthful than new information. This is known as the illusory truth effect. To put it simply, the more often we hear a claim, the more we think that it’s true. This means that all people, no matter how educated, can fall prey to everything from fake news to advertisement campaigns.

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    #16

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward That microwaves kill all the nutrients in food.

    Acrobatic_Sport_4580 , osseous / flickr Report

    #17

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward A lot of things that we learned about dinosaurs when I was in elementary school turned out to be wrong. We thought they were scaly and reptilian, turns out a lot of them had feathers, and were very brightly colored, and were more like birds in a lot of ways than reptiles. Dinosaurs we thought existed like brontosaurus, turned out to not have actually existed.  Just everything dinosaur. Everything dinosaur was wrong.

    Ambitious-Try-3289 , Mike Bowler / flickr Report

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    #18

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward That the English language has comprehensive and consistent rules.

    FafnerTheBear , Ivan Samkov / pexels Report

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    What facts from your own school days have you seen get disproven within your lifetimes, dear Pandas? Is there any information from your lessons and lectures that you personally find hard to let go of even when you know it has been updated? We’d like to hear what you think—tell us about it in the comments.

    #19

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Just about everything they taught about nutrition was a lie... which is kinda insane when you think about it. An entire generation who doesn't know how food works in your body

    pigtailrose2 , Juan Pablo Serrano Arenas / pexels Report

    #20

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Basically any idea promoted by the D.A.R.E campaign

    Mort332e , Jay Reed / flickr Report

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    #21

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Blood is blue until it is oxidized

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    #23

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward 1970's elementary school - Global Cooling was in process. We would be out of oil by the end of the 80's

    Elvisruth , Guillaume Falco / pexels Report

    #24

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Cracking your knuckles will cause arthritis, plus basically everything in history class.

    DanOfAllTrades80 , Eren Li / pexels Report

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    #25

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Eating fat causes you to get fat.

    DMIDY , Towfiqu barbhuiya / pexels Report

    #26

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Earth had 4 oceans. The 5th ocean plot twist was revealed to me in my late 30s. I didn’t know, guys!! Could someone please update Gen X when this stuff happens? There should at least be a weekly memo or something. We are all over here failing easy trivia questions because no one told us that there was a 5th damn ocean. 🤣

    27Jarvis , Kellie Churchman / pexels Report

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    #27

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward I before E except after C.

    NateThePhotographer , Houcine Ncib / unsplash Report

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    #28

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward That breast feeding was a form of contraception

    alchemicalqueen , MART PRODUCTION / pexels Report

    #29

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward That by 1999 all the landfills would be full and we would have to use the Grand Canyon and valleys for our garbage

    ToddHLaew , Leonid Danilov / pexels Report

    #30

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward That 98% of our genes are unused, a throwback of evolution.

    ArachnidGuilty218 , Martin Lopez / pexels Report

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    #31

    Every plate I eat should be MAJORITY pasta, rice, bread or some other kind of carb. The rest should be split between dairy, meat and vegetables equally.

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    #32

    "Junk DNA has no function" frustrated me to no end. It turns out it was never "junk". It is actually extremely important to tell the rest of the DNA how to be expressed, and it has played a pivotal role in the evolutive process. I alway remember my high school teacher insisting that it was only useful for paternity testing, despite it having already been more thoroughly studied by then.

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    #33

    That I really need to know why the author made red doors in his book.

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    #34

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward Mendelian genetics: Eye colour depends on one gene, brown (dominant) and blue (recessive), the rest (grey, green, etc.) is just what happens in the uterus. While this mostly works, multiple genes are playing together. And two blue-eyed parents may still have brown eyed children. 

    Ok-Painting4168 , Pixabay / pexels Report

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    #35

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward "There's no such thing as negative numbers. You can't take 3 apples away from 2 apples." Mrs. Adams, my third grade teacher. I don't know what other lies she taught me that I still believe today, but the idea of it pisses me off.

    Snoo-35252 , Katerina Holmes / pexels Report

    #36

    How dinosaurs looked and behaved has since been reworked and to be honest it's strange it took so long for anyone to think "wait what if they had fat, feathers and hair like most other animals?" That the neanderthals were ancestors of humans like homo erectus That dogs were tamed by the humans (I don't even know if that was even thought to be right back then) That the vikings were the first to settle on the americas

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    #37

    30 Facts People Learned In School That Are Now Disproven Because Science Moved Forward That your heart has a finite number of beats. Once it reaches that number, you die.

    Kwarktaart27 , Anna Shvets / pexels Report

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