this post was submitted on 14 Apr 2025
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Asklemmy

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[–] FenrirIII@lemmy.world 1 points 1 day ago

Everything about Christopher Columbus.

[–] gravitas_deficiency@sh.itjust.works 86 points 6 days ago* (last edited 6 days ago) (1 children)

The United States operates on the principle of three co-equal branches of government, which check and balance each others power.

[–] multifariace@lemmy.world 16 points 6 days ago

This is painful.

[–] YesButActuallyMaybe@lemmy.ca 42 points 6 days ago (1 children)

Trickle down economics are an effective way to redistribute wealth

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[–] Hyphlosion@lemm.ee 33 points 6 days ago (1 children)
[–] Inucune@lemmy.world 8 points 6 days ago (1 children)

We congratulate drugs for winning the war on drugs.

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[–] MasterFlamingo@lemm.ee 18 points 6 days ago

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.

[–] stinky@redlemmy.com 12 points 5 days ago

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.

[–] lukecooperatus@lemmy.ml 29 points 6 days ago (2 children)

Basically everything I can recall being told in D.A.R.E program classes (war on drugs era propaganda taught in public schools in the USA) was utter nonsense and fabricated bullshit. After actually having personal experience with most of the substances they vilified, none of the effects - good or ill - are what I was taught in that ridiculous program.

On the contrary, some of the fear tactics they used made me curious to investigate on my own. The breathlessly scared rural teacher describing the mind bending effects that "magic mushrooms" was supposed to have sounded fascinating to teenage me. In reality, they are very fun and therapeutic to use, but nothing like the wild Alice in Wonderland mind journey they made it sound like it would be.

[–] DJDarren@sopuli.xyz 7 points 6 days ago

Drugs Are Really Excellent?

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Racism used to be a problem until Lincoln and MLK fixed it.

[–] ilinamorato@lemmy.world 13 points 6 days ago

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!

[–] friend_of_satan@lemmy.world 13 points 6 days ago* (last edited 5 days ago) (1 children)

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

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[–] Meron35@lemmy.world 20 points 6 days ago (2 children)

Physical Vs chemical changes.

It was typically taught that physical changes are differentiated from chemical changes because they could be "undone" or that they had "no chemical reaction." Which was very confusing, because you can't uncut paper, and dissolving stuff in water clearly results in different chemicals being produced, yet both were examples of physical changes (actually the latter is sometimes taught as a chemical change). Furthermore, most chemical changes are actually reversible.

It has since been recognised that this classification is BS, and most changes actually exist on a continuum.

I distinctly remember my fifth grade teacher trying to pull that.

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[–] captain_aggravated@sh.itjust.works 14 points 6 days ago (4 children)

I was taught that Jupiter had 17 moons, Saturn has 12 and Pluto has 1. Many more have been discovered since.

Then there's the whole "different areas on your tongue taste different flavors." Like you only taste sweet with the tip of your tongue, the middle tastes salty, etc. I remember being given various substances by my fifth grade teacher like sugar, coffee, lemon juice, table salt etc. and we tried putting them on different areas of our tongues and we were like "...no, we taste everything everywhere."

[–] Waldelfe@feddit.org 3 points 5 days ago

I was always so confused by the tongue areas because it never seemed to work for me. Especially sweet, I tasted sweet far more at the back than on my tip.

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[–] oliver@lemmy.godforsaken.eu 16 points 6 days ago

Making grimaces and being told that your face may remain that way if you don’t stop making them… 🀑

[–] HiddenLayer555@lemmy.ml 5 points 5 days ago* (last edited 5 days ago) (1 children)

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.

[–] Krelis_@lemmy.world 3 points 5 days ago (1 children)

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

[–] theksepyro@lemmy.ml 2 points 5 days ago (1 children)

Glass not being a polymer still does suggest they're talking out of turn

[–] Krelis_@lemmy.world 1 points 4 days ago

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.

[–] Nikls94@lemmy.world 8 points 6 days ago (2 children)

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.

[–] Rainbowblite@lemmy.ca 6 points 5 days ago

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.

https://en.m.wikipedia.org/wiki/Skeletal_fluorosis

[–] turnip@sh.itjust.works 3 points 6 days ago (2 children)

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.

[–] drq@mastodon.ml 3 points 6 days ago (1 children)

@turnip

> It can cause dimensia

I'm sorry, what the fuck? And what is "dimensia"? Does it have anything to do with spacetime dimensions?

@Nikls94

[–] frozenspinach@lemmy.ml 5 points 5 days ago

Yeah, you start seeing the full multiverse. It's crazy.

[–] Nikls94@lemmy.world 3 points 6 days ago (3 children)

And don’t forget to floss! As soon as I learned that my gums donβ€˜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

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[–] arsCynic@beehaw.org 5 points 6 days ago

That adults are mature and know what they are doing.

-β€―-
✍︎ arscyni.cc: modernity ∝ nature.

[–] invertedspear@lemm.ee 5 points 6 days ago

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.

[–] njm1314@lemmy.world 3 points 5 days ago (1 children)

Hear about pluto? Pretty messed up huh?

[–] jongosi@feddit.nl 2 points 5 days ago

You know that's right!

[–] Horsey@lemmy.world 5 points 6 days ago* (last edited 6 days ago)

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 πŸ™„.

[–] nibbler@discuss.tchncs.de 3 points 5 days ago

I was taught that Pluto is a planet. How could they have been so wrong???

[–] frozenspinach@lemmy.ml 3 points 5 days ago (1 children)

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.

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