We grow up in different circumstances, and it's impossible for everyone to develop the same worldview. Still, for society to function, we expect certain stuff to be universally understood — fundamental facts that people can agree on and rely on. But that isn't always the case.
Reddit user JustBeingElara recently asked the platform what common knowledge they realized wasn't so common.
Thousands replied, sharing etiquette rules, marketing tricks, basic biology, and much more, teaching each other all sorts of useful things. So we decided to collect the most interesting ones for those who love to learn!
#22

This may sound like common sense, but you’d be SHOCKED. Chickens will lay eggs nearly every day regardless of the presence of a rooster. It’s the equivalent of a period not a baby.
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59points
#23
How to properly train and own a dog. The amount of people who know nothing about dogs is baffling to me. The belief of alpha hierarchy has been proven false in both dogs and wolves for over 20 years by researchers. Yet, people still use it and recommend it as a form of training. It’s proven harmful. This leads to fearful and aggressive dogs.
There is a TON of ignorant dog owners. Not only do they spread false information, they don’t even bother fact checking themselves.
The reason why dogs end up in shelters is because of BOTH irresponsible breeding and irresponsible/uneducated owners.
There is a TON of ignorant dog owners. Not only do they spread false information, they don’t even bother fact checking themselves.
The reason why dogs end up in shelters is because of BOTH irresponsible breeding and irresponsible/uneducated owners.
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58points
#24

That in English, apostrophes are generally used for contractions (cannot=can't) or to show possession (the bone belongs to the dog. The dog's bone). It is NOT SUPPOSED TO BE USED FOR PLURALS. 1 dog, 2 dogs. 1 ex, 2 exes.
57points
#25
Growing up I thought every household had constant yelling, walking on eggshells, and random silent treatments. Took me way too long to realize a lot of people actually grew up in calm, supportive homes and that mine wasn’t “normal conflict,” it was just unhealthy.
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56points
#26
As an Aussie: the size of Aus and the distance/travel time between places in Aus. You can start in one state, drive for three days, and still be in the same state.
We’re basically the size of the US with nowhere near the population or inhabitable landscape.
We’re basically the size of the US with nowhere near the population or inhabitable landscape.
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55points
#27

That being out in the cold does not give you a cold.
Tomschewies:
Soooo many people believe this. I think it confuses people that cold weather can cause a leaky nose but that doesn’t mean it’s a cold.
Tomschewies:
Soooo many people believe this. I think it confuses people that cold weather can cause a leaky nose but that doesn’t mean it’s a cold.
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55points
#29
An awful lot of people I talk to don’t realize their tax refund is their money anyway.
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53points
#30

The fact that deer do in fact drop their antlers, usually after mating season is over & then grow a new set every year 🤷🏻♀️.
52points
#31

Ponies are not baby horses, just like how chihuahua and pugs are not baby dogs. Ponies are a type of horse that stay small even as adults.
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50points
#32
Pickles are pickled cucumbers.
i was amazed by the amount of people who argued with me when i told them.
i was amazed by the amount of people who argued with me when i told them.
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48points
#33

No, you cant use US $ to pay for things in an European country!
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47points
#34
I don't know about most, but a lot of people near me:
That the ACA (Affordable Care Act) and "Obamacare" are the same piece of legislation.
That the ACA (Affordable Care Act) and "Obamacare" are the same piece of legislation.
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45points
#35
The number of people who don't know that water boils faster if you put a lid on the pot is genuinely concerning.
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43points
#36

Low(er) in calories does not mean it's healthy or better for you.
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42points
#38
That green bell peppers are the unripe versions of yellow, orange, red and purple peppers
(ETA I didn't say those colors were stages of ripeness. Orange bell plants will grow orange peppers. Red bell plants will grow red peppers. But they start green and you have to let them ripen).
(ETA I didn't say those colors were stages of ripeness. Orange bell plants will grow orange peppers. Red bell plants will grow red peppers. But they start green and you have to let them ripen).
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41points
#40

That cows have to be kept repeatedly pregnant to continue producing milk- too many people think that cows are just always making milk and it somehow "needs to be relieved" when their udders are full.
38points


