Some science facts can be pretty wild. Like this fun fact about grasshoppers. Did you know that their ears are actually on their bellies? And not just one pair of ears. They apparently have six along the sides of their abdomens! This is the kind of fact that I find quite hard to wrap my head around.

So I totally get why one Redditor went to r/AskReddit and posed a similar question to other netizens. The user u/shirofromgame wrote: “What is a scientifically proven fact you refuse to believe?” And the ‘refuse to believe’ part in this case is not that they actually don’t believe it. It’s more that the fact is so outlandish or ridiculous that it just blows their mind.

#1

That babies’ adult teeth are under their eyes (skeletal).

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#2

A humans eyes are fully grown when born.

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#3

Humans are made up of 70% water, just doesn’t make sense. Too many bones and muscle for such a high number.

Image credits: Hughlass

#4

The fact that our eyes see everything upside down and back into our brain we have to flip the image. Just crazy.

Image credits: No_Dare_95

#5

In a lottery, having a string of consecutive numbers (say 1,2,3,4,5,6) being drawn is equally likely as a string of random numbers being drawn.

Image credits: Esqulax

#6

Cold water is just as effective as warm water for washing hands.

Image credits: Schmomas

#7

Sail boats can go faster than the wind blows. 25 knot winds? The boat can go 30+ knots with just the sail power alone.

Image credits: riotacting

#8

The fact that t.rex and stegosaurus were separated by millions of years and never existed together. I will always have Stegosaurus battle T Rex when given dinosaurs to play with!.

Image credits: FiercestBunny

#9

Tomato is a berry.

Image credits: MistakeMysterious347

#10

Pin hole cameras. It just blows my tiny mind.

Image credits: Rumhampolicy

#11

That computers work by using combinations of 0 and 1!.

Image credits: PiHeadSquareBrain

#12

That we, as women don’t “sync up” with other females in regular close proximity.

Image credits: NessiesMorgue

#13

Black is absolutely a colour, how else would there be a crayon for it?.

Image credits: SonorousThunder

#14

Women are born with all the eggs already in them and don’t produce those through the lifetime.
It is so ridiculous that I still can’t believe it, even though I tell it to the others. Hope for a paper suggesting an alternative to “The egg from which you were born was actually created by your grandma”.

Image credits: Ramental

#15

That jet planes can fly. Come on.
I’ve flown on them many times before.
But come on.

Image credits: fanau

#16

I refuse to believe a leopard-moose-camel with a 40ft neck is a real animal and a horse with a horn isn’t.

Image credits: StfuJohnny

#17

Q-tips do belong in my ears and I refuse to believe any doctor saying otherwise.

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#18

That fruits and vegetables do not decay faster when I’m the one paying for them.

Image credits: Mildly_Defective

#19

That the average time to sleep is 7 minutes. WHO???.

Image credits: VanityTheNoLife

#20

That I’m not one living entity; billions of lifeforms all combine to make one of me.

Image credits: Anishinaapunk

#21

Our stomach acid is strong enough to even dissolve metals over time.

Image credits: Moon_Jewel90

#22

The levels of crazy my kids can reach after having a marshmallow, or any junk food for that matter, makes me not believe that sugar doesn’t cause hyperactivity.

Image credits: gdtags

#23

The solution to the Monty Hall paradox. I can even do the math myself. But it still “feels” intuitively wrong.

The scenario: you’re on a game show and the host offers you a choice between three doors. Behind one door is a million dollars. Behind the other two doors, you get nothing.

You make your choice. But before the host opens the door to reveal what’s inside, he opens one of the *other two* doors to reveal nothing behind *that* one. He then offers you a second choice: do you keep the door that you already chose? Or do you switch to the other unopened door? Does it matter?

Intuitively, it feels like it shouldn’t matter, that you have a 50-50 chance of winning whether you switch to the other door, or keep the one you chose originally.

Mathematical reality: you should switch. You have double the chance of winning the money if you switch to the other door, compared with staying put.

Close second: in any random group of just 23 people you will have more than 50% chance that at least two of them will share the same birthday. Again, I can do the math to prove this but it still doesn’t feel right.

#24

The idea that time can bend and stretch depending on gravity and velocity.

Image credits: youronlynora

#25

Skyscrapers sway a lot. I refuse to believe a building like the burj khalifa moves 6-7 feet in the wind without issue.

Image credits: Crotean

#26

That cutting ‘young’ & soft body hair does not necessarily make them grow back hard. It’s usually the tip which is now blunt is what’s making it feel rough.

Image credits: Temporary-Option-679

#27

As a child I could not grasp that groves in a record could make complicated music when a needle ran over them. Now that I’m older and it’s all light on metal disks or just math (somehow) I have given up even pretending I believe. It’s magic, pure and simple.

Image credits: raceulfson

#28

That a regulation basketball hoop is 18 inches in diameter and can (almost) fit two NBA basketballs at the same time. I swear the hoops I play at are way smaller and it’s not because I suck at basketball.

Image credits: perriertardis

#29

That Kraft Free Singles are even cheese.

Image credits: RolHuell-Biesta1962

#30

Narwhals. Ain’t no way.

Image credits: walt_mink

#31

I refuse to believe that ALL snowflakes in the entirety of history are unique.

You mean to tell me, that ALL snowflakes EVER, across the ENTIRE GLOBE, are COMPLETELY UNIQUE?

That can’t be mathematically possible. Like, a single storm that drops 3 inches on my house must be a million flakes. Multiply that by the area of that storm, and the depth of the snow, and that number becomes huge. THEN, add that to every storm in the history of the whole globe.

I just can’t believe that we have seen every snowflake and have come to the definite conclusion that they’re all unique. Scientists aren’t at my house cataloging the snowflakes. How do they know?.

#32

I know it’s true but I still find it hard to believe that viruses are not considered living organisms.

There are a lot of factors but the two biggest ones I think are the fact that they are inert and do not use energy when not in a host. And that they cannot self replicate without said host.

Hard to believe something capable of so much death and destruction is probably not even conscious.

Image credits: Raveler_gav

#33

That the speed of light can’t be broken. They said flight was physically impossible with a machine, then they said breaking the sound barrier was impossible. I just don’t believe that we’re right this time either.

Image credits: Chewie83

#34

The double-slit experiments and all their variations still weird me out. As someone who hasn’t studied the necessary fundamentals, it just seems like the Light particles know whether or not you’re watching and will change their behavior depending on what you’re expecting them to do.

#35

I’m not a creationist or deny evolution but where do platypuses fit in the evolutionary trees? Then you add in the idea that birds evolved to fly seems far fetched.

Like you’re telling me, an egg laying duck that lactates milk then swims in the water evolved that way? I don’t think so buddy.

#36

That dark matter / energy exists. We’ve yet to directly observe any of it, only the indirect effects via gravity, and even Einstein himself acknowledged that his model of physics was incomplete. We understand gravity now better than Newton did, but there are still gaps.

While the body of evidence supporting dark matter theory is extensive, we’re one step away from demolishing and reinventing all of modern physics. One day a new Einstein will come along and invent an even more robust model of gravity, and it could reveal that our supposed “dark matter” was really the result of a huge flaw.

#37

That many living people have Neanderthal DNA. Mostly in non-African ethnicities. My DNA is apparently more ‘Neanderthal’ than 93% of the population tested to date by 23andme. WTF? THat many living people have the DNA of another non-modern species (is that the right word?), the Denisovans (mostly certain Asian ethnicities). How many more non-modern species of DNA do humans carry that we just have not identified? How many others did we interbreed with? WHAT ARE WE?

#38

The whole quantum stuff blows my mind. Like – are you trying to tell me that as long as I don’t look – everything happens in parallel and resolves to every possible outcome, but stabilizes as soon as I look?
WHAT?!

Yeah, I’m not denying it, it’s just so mindblowing.

#39

The fact that, in the entire history of humanity, it is likely that the same arrangement of a (fairly) shuffled standard deck of 52 cards has ever come together twice, and probably never will.

#40

The area from which the optic nerve leaves the brain is called ‘The Blind Spot’. There is no image formed in this area. Yet we see the world accurately beacuse of the brains ability to fill in this accurately. This is mindbowing (pun intended) especially considering the accuracy to which the brain is doing this.

#41

That cold plunges are good for your health. Can’t do it. Not going to submerse myself if freezing water.

#42

Not really “refuse to believe”, more “having a really hard time to wrap my head around it”:

The survival of the human race (especially in relation to how time- and work intensive our reproduction is.)

I know amazing leaps were done in fertility treatment, reproduction medicine and infant care!

Yet, at it’s core, it’s still the same process: the offspring has to be grown for (roughly) 40 weeks, inside a female body.
It takes hours, sometimes even days, of heavy pain to birth the offspring.
And even when that’s done, human babies are 100% helpless and dependant on someone, for a good while. Sometimes, one even just “forgets how to breathe” and dies.

Somehow we still managed to grow in population by…a hell of a lot.

It boggles my mind, how biology hasn’t found a safer, less time and work intensive way for us to reproduce, yet our population exploded.

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