Everything about Christopher Columbus.
It was false then but my seventh and eighth grade science teacher told us that blood was blue. My mom was a nurse so I knew that it was bullshit but was definitely confused because he was my science teacher.
Some children are taught in school that God created the earth. Some of us were allowed to learn that humans cannot effect climate change, allowed to discuss it openly, and allowed to graduate with that idea without ever being corrected. Children are being taught today that slavery and colonialism were good things for some people.
Racism used to be a problem until Lincoln and MLK fixed it.
I have one that was proven false, and then later re-proven true: the existence of the brontosaurus.
When I was in elementary school, we were taught that they existed, they were big, etc. Then, at some point while I was in college, I discovered that actually what we thought was a brontosaur was a brachiosaur or an apatosaur. And then, when my kids went to school and learned about the brontosaur, I discovered that actually, they did exist!
The myth that glass is a very thick liquid. It’s actually much weirder than that. https://gizmodo.com/the-glass-is-a-liquid-myth-has-finally-been-destroyed-496190894
I tried to argue this with a science teacher who chose that specific material for a question about phases, and I assumed she was asking for this tricky reason. She marked me wrong and wouldn’t accept my personal research on the topic as makeup. I was humiliated. I hope she’s dead now.
That fluoride and vaccines are bad for you… tbh, I only believed it for 2-3 weeks until I did my own research, but it was a frightening clarification. Didn’t believe that teacher a single word after that.
Fluoride can be bad for you, just at much higher doses than they put in water supply. It can cause issues with bones and neurological development. Again, only in very high doses over a long time. It happens a lot in poorer countries where they can’t treat well water.
I think people underestimate the problems with teeth hygiene. It can cause dimensia, so teeth should be brushed before you eat, though avoid mouth wash.
Yeah, you start seeing the full multiverse. It’s crazy.
And don’t forget to floss! As soon as I learned that my gums don‘t bleed because of the metal thing, but because food between my teeth decays and that decaying decays my gums, turning it all into poop, I started to floss every second day.
Why should I avoid mouth wash though? My routine is floss - mouth wash - brushing
Just the cancer causing it does. I’d read a study on it one time, I believe it’s accurate.
Mouthwash cancer?
A lot of mouthwash uses alcohol, which does cause oral cancer
That adults are mature and know what they are doing.
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✍︎ arscyni.cc: modernity ∝ nature.By the time I was in school the Bohr model was already proven inaccurate, but was taught anyway because the orbital model is too esoteric for teenagers 🙄.
I was taught that Pluto is a planet. How could they have been so wrong???
I had a substitute teacher who saw the Swift Boat Veterans For Truth ads against John Kerry and repeated it to the class like it was 100% fact.
What
That glass is a liquid at room temperature, just a very viscous one so it doesn’t appear to flow. It’s not. It’s not a crystalline solid so it has an internal structure similar to a liquid, but the structure is definitely solid at room temperature because the components are not capable of moving relative to each other like a liquid would.
It’s also not the reason church windows are thicker at the bottom, a common myth that my ex-colleague with a PhD in polymer chemistry(!) somehow bought into
Glass not being a polymer still does suggest they’re talking out of turn
Not a polymer but an amorphous solid like many polymers; I believe she popped that nugget while explaining crystallinity and glass transitions. She was quite knowledgeable otherwise but that little false factoid must have slipped through.
The moon was spun out of the same stuff as the earth. That was fact in the early years of my education. A few years later there were multiple theories: co development, captured a wandering planetoid, the Thea impact, and a fourth one I can’t remember but I think it was something dumb like planetary mitosis. By the time I graduated the Thea impact was considered the only viable theory.
Hear about pluto? Pretty messed up huh?
You know that’s right!
“You need to learn this because you won’t always have a calculator on you!”
That wasn’t so much a “fact” told in school as it was a prediction, and it was true for them. Some people carried pocket calculators, but most people didn’t. Some supermarkets has calculators built into their carts, but most didn’t.
Failing to predict society’s norms in 20 years isn’t the same as teaching a false fact.
Some supermarkets has calculators built into their carts
wat
Tiny photocell powered calculators used to be everywhere. There were “thin” ones to fit in your Costanza sized wallet, Mousepads with them built in, and my wristwatch in 6th grade had one with tiny rubber keys.
It was a magical time till be alive. 5318008
Yep, back in the 90s they were in some places. My local supermarket had one like this, except without the annoying ad on the left side.
The same was told to me even as everybody already had mobile phones with calculators in them or even iPhones
Basic mathematical literacy is a prerequisite to being able to use a calculator.
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I feel have super power by being to calculate accurate tips without needing to crack out my phone.
Yeah but its such a hassle to find, so…
