Asklemmy

That the 13^th^ amendment outlawed slavery.

That learning styles exists

The Bibel

I always think about when I was taught about taste and the human tongue back in grade school, they had these diagrams about zones on the tongue corresponding to sweet, sour, bitter, etc. like a "taste map". I'm not sure how many generations were taught about it but turns out it just isn't true at all. So, not like it's important but you got a lot of misinformed folks out there in regards to taste lol

Nearly anything abouth Pre-Columbian North and South America. Turns out, there was no homogeneous "Native" culture, just as there was no "European" culture. Every different group had their own traditions and stories. They all were complex people, not one-dimensional savages or pacifists. We should simply view them as any other people.

That the first amendment and free speech are the same thing

That looking too closely at the screen will blind you or damage your eyes. This myth originated decades ago in the 1960s from an advertisement by a television manufacturer. Basically in 1967 General Electric reported that their color TVs were emitting too many x-rays due to a factory error, so health officials recommended keeping children and pretty much anyone else at a safe distance from the screen. The problem was soon resolved, but the myth endured.

If you ask me I would say that x-ray radiation has little to do with going blind, I have no idea if radiation can actually make you blind, but it's funny how somehow eye diseases got in the way as the only possible consequences in the myth just because we use our eyes to watch TV.

Birds!

That by not being ridiculously overtly bigoted, they have actually interrogated and rejected their own bigotry. The former is basic and mostly relies on social conditioning. The latter requires reading history and people who are criticizing things with which you may identify and therefore take very personally. The latter is not taught in school and school does not provide the tools (outside of literacy) to do so, so it's a difficult, painful, abd regrettably rare thing to see, usually requiring sone trauma to change.

That the average person will swallow 8 spiders a year in their in their sleep.

Americans: You’re not tired after eating Thanksgiving dinner because of tryptophan in the turkey, you’re tired because you ate a lot of food.

At the risk of upsetting people, most if not all religions. They can't all be right.

WiFi/Cell phones give you cancer. Both devices operated in the microwave spectrum, at or below 1 watt of power. That's about the same amount of power as the flashlight on your phone but in a wavelength so unenergetic that you can't even see it. You could put the phone in your mouth and get absorb less energy than just walking outside into the sun.

https://en.wikipedia.org/wiki/List_of_common_misconceptions

The government is looking out for your best interests

You have to completely decharge batteries before recharging them.

That there are heroic countries in the world.

That you own your PC

That cold water will boil faster than warm water.

It's a confusion. You should always cook with cold tap water, not hot, because hot tap water can contain excessive amounts of lead.

There are several instances where hot water can freeze faster than lukewarm water. I believe people saw this on shows such as Bill Nye and then forgot the specifics.

I know it's low hanging fruit, but religion.

The Russiagate https://jacobin.com/2020/04/russiagate-christopher-steele-dossier-trump-election

edit: all the people being mad and downvoting just goes to underscore that once people internalize nonsense, no amount of evidence will change their minds

That they're right. You should be able to question your own opinions. A lost art, it seems