1) Be nice and; have fun
Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them
2) All posts must end with a '?'
This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?
3) No spam
Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.
4) NSFW is okay, within reason
Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either [email protected] or [email protected].
NSFW comments should be restricted to posts tagged [NSFW].
5) This is not a support community.
It is not a place for 'how do I?', type questions.
If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email [email protected]. For other questions check our partnered communities list, or use the search function.
6) No US Politics.
Please don't post about current US Politics. If you need to do this, try [email protected] or [email protected]
Reminder: The terms of service apply here too.
Logo design credit goes to: tubbadu
Pluto was discovered because the orbit of Neptune didn't match predictions, so astronomers decided that there must be a ninth planet out there. It was very close to where the math predicted it would be.
It turned out later that Pluto was much, much smaller than at first thought, and couldn't be the 9th planet. It then turned out that the mass of Neptune was greater than expected, and the orbit actually matched expectations without the need for a 9th planet.
Back in the day, without proper health guidelines, banning the eating of pork was a really good idea.
Same goes for shellfish - unrefridgeated it can go nasty quickly, and if you live in a hot environment that's gonna be even faster.
I grew up on the coast, and my parents always had this rule to never eat/cook/serve shellfish that weren't fished (shellfished?) same day or yesterday.
~~While true from a health standpoint, isn't the idea of religious food prohibitons being based on health somewhat contentious~~?
~~I thought that Jews didn't eat them because they have cloven hooves and they don't chew their cud~~.~~
Edit: I read the question, then still went on my own tangent because I find the origin of religious taboos interesting. Apologies
Right, isn't that the point of the question? What old time things did we do for one reason (cloven hooves) that turned out to be right for completely different reasons (health and safety)
Yes, you are correct. I apparently went on a tangent of my own.
That was how the put them in buckets.
But I think it's at least as likely as not that whoever wrote that rule chose those buckets to be "unclean" because people got more sick more often. "I got sick once after eating it" is still one of the biggest reasons some people don't like seafood. Your brain is very good at turning single bad events into "don't touch this" if there isn't a body of safe interactions to fall back to.
Oh, they likely weren't based on health, but that still didn't make it a bad idea. :)
Yes, I erroneously extrapolated your comment to include why it was banned.
they likely weren't based on health?
Midwives did not understand germ theory, but still washed their hands and cleaned the delivery areas for delivery due to tradition.
Fun fact:
A Hungarian doctor tried to combine midwife tradition with his knowledge of modern medicine to get even better results. He required his nurses to clean on a regular basis, and required doctors to wash their hands with a chlorine solution before all medical procedures.
The result was a resounding success, with the complication rate as his facility being better than both the midwives and other doctors. However his methods violated social conventions at the time, so he was shunned from society and considered a disgrace. He died in an insane asylum.
How can that end so sad, yet so funny at the same time?
Sort of tangential, but Democritus was right about atoms, but obviously he worked it out in a very different way to how modern scientists did — though we don't know his exact reasoning.
Even more tangential: Aristotle (and others) were wrong about the four elements making all matter, but they do correspond to the four basic states of matter, which is kind of fun: earth=solid, water=liquid, air=gas, fire=plasma.
Black holes. Predicted in the 1700s using Newtonian gravity. The event horizon diameter even turned it to be right (ie. matches the one predicted by general relativity).
Fun coincidence from Newton's not quite right theory of gravity combined with his not quite right particle theory of light.
The use of copper for health purposes. It’s used in UIDs today and is anti parasitic, anti-bacterial, and anti-viral
“We believe this stuff prevents infections”
“Silly savages, it works but not for the reason you think. You see, it kills microorganisms, thereby preventing infections”
“That’s what I said”
“You didn’t say microorganism”
“I speak Aramaic!”
Snake oil from Chinese water snakes may actually have some effect on conditions like arthritis because it contains large quantities of omega 3 fatty acids. Most of the "snake oil" sold in the west was fake and just mineral oil, or sometimes rattlesnake oil.
Lamarckian inheritance ended up being kinda true thanks to the discovery of epigenetics
I looked this up for those of us who have no idea what this person is talking about:
Lamarckian inheritance, the idea that traits acquired during an organism’s lifetime can be passed on to its offspring, was largely dismissed for a long time. However, with the discovery of epigenetics, we now know that environmental factors can indeed cause changes in how genes are expressed, and these changes can be inherited. This means that while the DNA sequence doesn’t change, the way genes are turned on or off can be influenced by experiences and passed down to future generations, making Lamarck’s idea somewhat true in a modern scientific context.
It's stretching it to say epigenetic marks are inherited across multiple generations. The influence weakens quickly.
In medieval times, when you had the flu, the prescription was lots of water. Not to flush your system and keep you hydrated as is modern wisdom, but to balance your humors, which is made-up nonsense.
The ancient Romans discovered evolution, though it worked a lot differently, with them theorizing we came from fish and that one day some guy with arms and legs burst out of a mother fish. According to the theory, things probably got incredibly awkward at family reunions.
So a speedrun from what actually happened.
Bloodletting actually has its uses. It's rare, but a valid treatment. It's called phlebotomy now, but it's essentially the same thing.
I don't remember exactly what the condition was, but I remember my grandfather went through it. Something to do with too much iron.
EDIT:
According to chatgpt, the condition is called hemochromatosis. It matches my grandfather's description of having high levels of ferritin.
