When the great pyramids were being built there was still woolly mammoths walking the earth.
I learned today that transplanted hearts will grow biologically younger or older to match the new body.
What is your interesting fact or knowledge that is completely useless that you wish to share?
Submitted 3 weeks ago by WanderWisley@lemmy.world to [deleted]
https://lemmy.world/pictrs/image/b0064cb4-1582-46c5-a66d-7c1ac7fc58d7.jpeg
Comments
yesman@lemmy.world 3 weeks ago
isleepinahammock@lemmy.blahaj.zone 2 weeks ago
What if I replace most of my organs with younger ones? If a billionaire gets a whole body transplant, does that also de-age his brain?
Lumisal@lemmy.world 2 weeks ago
It’s the blood that seems to matter more than the organs, and not all organs follow this rule. Kidneys for example don’t really change much.
Z745812939054@lemmy.zip 3 weeks ago
more time passed between the building of the great pyramid and cleopatra, than between cleopatra and today
snooggums@piefed.world 3 weeks ago
Another example of things lasting far longer than people think is more years passed between the Stegosaurus and the T Rex than the T Rex to today.
MrEff@lemmy.world 3 weeks ago
Ancient Egyptians had higher education programs, almost like us and universities. One “major” was the equivalent to what we would be archeology. As in, there were ancient egyptologists who studied an even more ancient Egypt.
Valmond@lemmy.dbzer0.com 3 weeks ago
They had archeologists, kind of wild when you think about it.
tiny_hedgehog@piefed.social 2 weeks ago
There are more atoms of hydrogen in a molecule of water than there are stars in the whole solar system.
Fjdybank@lemmy.ca 2 weeks ago
So, more than the 1 star in our solar system? Did you type that right?
tiny_hedgehog@piefed.social 2 weeks ago
Correct. I essentially said 2 is bigger than 1.
translucent_tube@lemmy.world 3 weeks ago
Our ability to feel social judgment and shame reuses the same neural circuits as physical disgust or nausea. This effectively makes it so that you can take anti-nausea medication to temporarily make you less judgy of other people’s life choices.
captainlezbian@lemmy.world 2 weeks ago
Brb drugging my family with anti nausea medicine
applebusch@lemmy.blahaj.zone 2 weeks ago
[deleted]isleepinahammock@lemmy.blahaj.zone 2 weeks ago
We should pass a funny law that requires all humanoid robots to grunt as they move.
ouRKaoS@lemmy.today 2 weeks ago
You’ve never been close to one of those clankers, huh? The constant whining of every servo motor is like a bunch of small, high pitched groans in tandem.
howler@lemmy.zip 2 weeks ago
I’ve really enjoyed this fact, thank you!!
melsaskca@lemmy.ca 2 weeks ago
Muscles can be either voluntary (choosing to lift a chair) or involuntary (a beating heart) as well.
spiffy_spaceman@lemmy.world 2 weeks ago
Along these lines: a major league baseball batter must predict where the ball will be before it leaves the pitcher’s hand. There is literally not enough time for the neural signal to get from the eyes to the brain, be processed and then an impulse sent to the arm muscles to swing the bat in the time it takes for the ball to travel to home plate at 95mph.
Krudler@lemmy.world 2 weeks ago
With vanishingly rare exception, addicts choose the mood altering substance that is closest to what the medically accepted treatment for their underlying disorder(s) would be.
People who are addicted to alcohol, without exception, have an underlying anxiety disorder.
People with ADHD and similar brain functioning tend to choose amphetamines.
The list goes on and it gets very complicated, because most mood altering substances have multiple effects, and most people have a blend of underlying issues. But the point is, there is a very noteworthy observation there, I feel.
I feel qualified to say this as myself I am 11 years sober and have worked in the field of addiction for 8 years and I’m formally educated.
Agent641@lemmy.world 2 weeks ago
But I liked all of the drugs.
Tehhund@lemmy.world 2 weeks ago
That means you have all of the problems!
Schlemmy@lemmy.ml 2 weeks ago
I have ADHD and I trend to get into a comfortabele alcohol Buzz every evening because it shows down the train of emotions. Amphetamines don’t really feel good, nor do other drugs. I hate speed and weed.
bitjunkie@lemmy.world 2 weeks ago
People who are addicted to alcohol, without exception, have an underlying anxiety disorder.
People with ADHD and similar brain functioning tend to choose amphetamines.
I feel attacked…
bstix@feddit.dk 2 weeks ago
Is this related to the cravings for certain food?
Krudler@lemmy.world 2 weeks ago
No
meat@lemmy.blahaj.zone 3 weeks ago
A quarter of known animal species are beetles.
W98BSoD@lemmy.dbzer0.com 2 weeks ago
I thought there were four Beatles.
gastroglizzy@piefed.social 3 weeks ago
The specifications for all varieties of “9mm” cartridges (9x17, 9x18, and 9x19) actually call for a projectile with a diameter of 0.355 inches, which is actually 9.017 millimeters.
Similarly, the specification for .38 Special calls for a projectile with a diameter of 0.357 inches.
If you measure the barrel of any firearm chambered in any variety of 9mm, .38 Special, or .357 Magnum, you’ll find that they’re all ostensibly .35 caliber (0.350 inches).
Why? Well, the simplest answer is, things aren’t always what they’re called. In the world of cartridge designations, there are many, many such idiosyncrasies; these are only scratching the surface. I find this interesting because many people perceive cartridge designations as being very uniform, logical, and standardized, but the actual truth is far from that.
In some cases, the number is even made bigger just to make it sound more powerful, such is the case with .460 S&W Magnum, which is a more powerful version of .454 Casull, which itself is a more powerful version of .45 Colt, all of which actually fire a projectile with a diameter measuring 0.452 inches.
autriyo@feddit.org 3 weeks ago
The barrels smallest diametral dimension has to smaller than the bullet, otherwise the rifling wouldn’t engage.
Is that what the 0.350" are referring to?
It’s also kinda funny how the most common rifle rounds are smaller calibre than 9mm, so if you ignore all the other metrics, most handguns shoot “bigger” bullets than most rifles.
MrEff@lemmy.world 2 weeks ago
The barrels smallest diametral dimension has to smaller than the bullet, otherwise the rifling wouldn’t engage.
Kind of, but not really. The bullet actually slightly expands from heating. At the same time though, if you measured the diameter of a cold barrel and a hot barrel you would get two different measurements. If the cold barrel is too tight of a fit the bullet has an increased chance of lodging when it heats up and expands.
This is why bullets moved towards copper jackets with some sort of other metal center chosen for various justifications. The copper jacket is soft, east to expand into rifling grooves, not hard enough to damage and wear out rifling, and can stretch a little if it gets too tight.
Really, the BIGGEST difference is going to be the casing, chambering, and pressure. It’s like how people talk about 5.56 and .223 being the same. They are the same only at face value of size and clambering, but very different on rated pressures. A rifle rated to shoot .223 should only shoot .223. A rifle rated to shoot 5.56 is rated for a higher pressure and can shoot both.
It’s also kinda funny how the most common rifle rounds are smaller calibre than 9mm, so if you ignore all the other metrics, most handguns shoot “bigger” bullets than most rifles.
True, but this is also why “stopping power” is then measured in ft-lb (foot-pounds) or joules for metric. Pistols may shoot bigger rounds, but at significantly slower speeds. Less powder for recoil control and less barrel length for pressure build up. The bigger size bullet is a compensation for the smaller gun. A rile with a smaller round has far more energy behind it’s round.
Thebeardedsinglemalt@lemmy.world 2 weeks ago
It’s also kinda funny how the most common rifle rounds are smaller calibre than 9mm, so if you ignore all the other metrics, most handguns shoot “bigger” bullets than most rifles.
.22lr and 5.56 NATO projectiles are practically the same diameter.
gedaliyah@lemmy.world 3 weeks ago
As long as we’re doing pyramids, Cleopatra lived closer to the moon landing than the construction of the Great pyramid of Giza.
Mirshe@lemmy.world 2 weeks ago
Also we literally can trace, at least with some pyramids, people who built them. They weren’t slaves, they were masons and craftspeople and levied labor - and from graffiti we’ve found, it was considered a pretty great honor to work on one. Even just from a religious angle, do you want heathens who you’ve forced into slavery to build your vehicle for ascension into the afterlife?
medem@lemmy.wtf 2 weeks ago
Pumpkins are the largest species of…berries. Yes, seriously.
ouRKaoS@lemmy.today 2 weeks ago
Strawberries are not berries.
genuineparts@infosec.pub 2 weeks ago
Strawberries are an accessory fruit. Tomatoes, Bananas and Watermelons however are berries.
BigBrainBrett2517@lemmy.world 2 weeks ago
Surely Watermelons are larger than pumpkins? Can they tie for first? Or is the largest pumpkin ever bigger than the largest watermelon?
E_coli42@lemmy.world 3 weeks ago
Sharks are older than fire! It took billions of years for Earth to get the oxygen levels and fuel (land plants) needed for fire. Earth is the only place in the universe where we have seen fire.
Lumisal@lemmy.world 2 weeks ago
To be fair we can’t see other planets outside the solar system too well.
E_coli42@lemmy.world 2 weeks ago
None has the conditions for fire
FuyuhikoDate@feddit.org 3 weeks ago
If you mix Sparkling water with instant milk, you got the taste of spoiled milk!
Follow me for more recipies
cinoreus@lemmy.world 2 weeks ago
If you own a rig to run local LLMs, your computer can also pretty much run weather prediction softwares
GraphCast: AI model for faster and more accurate global weather forecasting — Google DeepMind share.google/R24aEDxkDuFfnitzo
This is the most recent one I learnt.
rockerface@lemmy.cafe 2 weeks ago
Sharks evolved before Saturn’s rings and the North Star existed.
tiny_hedgehog@piefed.social 3 weeks ago
Pythagoras (of Theorem fame) thought that beans were evil, and were also tiny humans.
https://thehistorianshut.com/2024/06/26/pythagoras-curious-relationship-with-beans/
Zachariah@lemmy.world 3 weeks ago
We live on Earth v2.0
There was a body in our orbit and then another large body (neither were planets, I guess, since they hadn’t test cleared their solar orbits of other bodies) crashed into it. The heavier parts stayed in what became the Earth we know. The lighter parts coalesced into what is now the Moon. The Moon is slowly leaving us because it has enough leftover motion to do so.
Simulation6@sopuli.xyz 3 weeks ago
Rattlesnakes get mosquito bites.
whoxtank28@lemmy.world 2 weeks ago
There is no thru line from mouth to urethra. You drink water , it gets absorbed into your blood, your urinary system filters excess water and waste, you pee it out. Your pee is filtered blood, the only thru lin for water to take from your mouth is your ass. I understood that when it was taught, but I didn’t really think about it…
expletivedeleted@lemmy.zip 2 weeks ago
Ketchup, or catsup, which is the same word latinized differently, was a fish sauce from China.
The western Europeans and American colonists used the recipe, and expanded it to things like mushrooms and many other ingredients. (for proof, look at the ketchup entry on wikipedia).
Tomato ketchup (which is specified on your bottle still today) wasn’t invented until we realized that tomatoes weren’t poisonous despite their color, and their sweetness and tang totally rocked with the ketchup recipe.
Now we use it to eat frenched fries, which aren’t French! In fact, they are Belgian, and are named because they used a cooking technique invented by the French called “frenching” which has evolved into deep frying.
So, you are dipping your belgian potatoes into a chinese sauce that use a North American fruit as a base.
And with this information, you shall father nations!
Lushed_Lungfish@lemmy.ca 2 weeks ago
The 300 Spartans were not the only ones that died at Thermopylae.
They were joined by 700 Thespians who did not have some macho ridiculous warrior creed of never retreating as they were not professional soldiers. They were just a bunch of guys trying to do the right thing protecting their homes.
gnufuu_but_only_5_words@lemmy.world 3 weeks ago
You can’t resurrect a horse
SirEDCaLot@lemmy.today 2 weeks ago
Everyone knows you jump in the pool in summer, smell the chlorine, and know the water is clean, right?
Fun fact- chlorine dissolved in pool water at the usual sanitation levels has almost no perceptible smell or taste.
HOWEVER, when chlorine binds with certain organic substances, especially ammonia (from the urea in sweat and urine), the result is chloramine which has a significant chlorine-y smell. Chloramine has essentially no disinfecting properties.So when you go to the public pool and get a whiff of chlorine and think ‘man they’re using a lot of chlorine today’, no, it probably means someone peed in the pool.
You’re welcome :)
NotAnOtter@lemmus.org 2 weeks ago
You can double an hourly rate to approximate the annual wage. $30/hr ~= $60k / year.
Because 50 paid weeks * 40 paid hours = 2000 hours -> 2k
$30 * 2k = $60k
Berttheduck@lemmy.ml 3 weeks ago
Sharks are older than trees.
The appendix isn’t useless it helps repopulate your gut bacteria after you’ve been ill.
Some people have their heart on the right side of their chest. Some people have all their organs swapped round - really confuses surgeons.
chunes@lemmy.world 2 weeks ago
monads are monoids in the category of endofunctors.
Suck_on_my_Presence@lemmy.world 2 weeks ago
The human brain is amazing and can predict the wildest things. You can look around a room and, without touching a thing, understand what it would feel like to lick random items.
Enjoy!
Squidiey@lemmy.ml 3 weeks ago
“German” chocolate cakes aren’r actually German.
Thebeardedsinglemalt@lemmy.world 2 weeks ago
Blue eyes in humans were the result of a mutation. Due to less pigment than average eyes are more sensitive to glare and bright light
baltakatei@sopuli.xyz 2 weeks ago
Mitochondria are actually parasites with their own genome and means of replicating. They will even actively defend their turf when other intracellular parasites appear.
scrodumb@lemmy.ca 3 weeks ago
The Moon is 384,400 km away from Earth. If you took every elephant on Earth and stacked them one atop another most of them would die.
mrmacduggan@lemmy.ml 3 weeks ago
If you took a horse’s large intestine and stretched it out end-to-end, the horse would not survive.
CelloMike@lemmy.world 3 weeks ago
If you laid every road on earth end-to-end a lot of people would be annoyed with you
Z745812939054@lemmy.zip 3 weeks ago
jokes aside, the vastness of space is incomprehensible www.joshworth.com/…/pixelspace_solarsystem.html
NaibofTabr@infosec.pub 3 weeks ago
I love this demo.
thomasloven@lemmy.world 3 weeks ago
Hey, is that fairy cake?
W98BSoD@lemmy.dbzer0.com 2 weeks ago
“Space,” it says, “is big. Really big. You just won’t believe how vastly hugely mind-bogglingly big it is. I mean, you may think it’s a long way down the road to the chemist, but that’s just peanuts to space. Listen…” and so on.
To be fair though, when confronted by the sheer enormity of the distances between the stars, better minds than the one responsible for the Guide’s introduction have faltered. Some invite you to consider for a moment a peanut in Reading and a small walnut in Johannesburg, and other such dizzying concepts.
esl-bits.eu/…/text.html
zout@fedia.io 3 weeks ago
I have one related, the diameter of the moon is smaller than Australia.
Noodle07@lemmy.world 3 weeks ago
If every human held hand in a straight line around the earth a lot of them would drown
kossa@feddit.org 2 weeks ago
The last people on land just have to be a wee bit stronger to keep the tension, then it works out fine.
aeronmelon@lemmy.world 2 weeks ago
I’m going to go out on a limb and say all of them would die for one reason or another.
Also, my first experience with the internet back in 1994 was a page of elephant jokes, I feel I’ve come full circle now.
kossa@feddit.org 2 weeks ago
Why full circle, though. Is this your last experience with the internet? RIP aeronmelon’s internet experience, 1994-2026
MIDItheKID@lemmy.world 2 weeks ago
Did you know that if you took a blue whale, the largest mammal on earth, and laid it end to end, tail to mouth, on a basketball court, the game would be cancelled?
NotAnOtter@lemmus.org 2 weeks ago
The moon causes tides, but mooning does not involve tiddies
LostCarcosan@lemmy.today 2 weeks ago
There are more hydrogen atoms in a single molecule of water than there are stars in the entire solar system
mika_mika@lemmy.world 2 weeks ago
You would guess this is useless info, but I can use this fun fact to remember how many suns the earth has also.
Glifted@lemmy.world 2 weeks ago
🤦♂️
jambudz@lemmy.zip 2 weeks ago
Every sixty seconds in Africa, a minute passes
NotAnOtter@lemmus.org 2 weeks ago
It’s hard to imagine any of them would live. I guess one near the top might survive by using the flood of elephant pieces to slow their fall. But an elephant can’t survive a ~10 foot fall. That’s about 2 elephants tall, and the bottom two or the ones I am most confident are dying in this.
tuxiqae@lemmy.dbzer0.com 2 weeks ago
Aould you say that all of them will? Some from lack of air and some from the weight of a gazillion other elephants on top of them