The world is an ever changing place.
In addition to continuing advancements in technology, human behavior also continues to evolve.
As a result, what might have seemed "normal" 50 years ago might seem far-fetched today, while things which we today consider "normal" might never have even crossed the mind of anyone back then.
Making everything we consider "normal" among the many things in this world that continues to evolve at a rapid pace.
Redditor Primary_Berry_3560 was curious to hear what "normal" everyday things were anything but normal fifty years ago, leading them to ask:
"What is normal now but wasn’t normal 50 years ago (1972)?"
We could just leave whenever we wanted to!
"Knowing where your kids are 100% of the time."- bradland
We're all wired up today!
"No one had a computer in their house in 1972."- tcharp01
Buckle up!
"Car seats for children."
"And most of the time we sat in the back seat with no seat belts available."- Rosemoorstreet
"Wearing seatbelts."
"There were no sensors- seatbelt were just shoved out of the way."
"Carding for cigarettes."
"Machines were everywhere for anyone to use."- factchecker8515
buckle up crash test dummies GIF by ADWEEKGiphyIn the old days, we had one chance!
"Watching an entire TV series at a time that's convenient for you."
"VCR's weren't even a thing 50 years ago, so if your favorite show was on Wednesday at 8PM, you were either at home to watch it or you missed out on it forever."- DeathSpiral321
Music on demand!
"Listening to the song you want to where you want to, rather than whatever is playing wherever you are."- jfincher42
GiphyBeing beholden to a landline!
"I am amazed to think about how disconnected we were."
"I could wake up on a Saturday morning and start calling friends."
"It was possible that not a single one picked up the phone and that was that."
"I would be on my own unless I waited a few hours and tried again."
"Also, in my area, the adults in the house almost always answered the phone so you had to get through them to your friends."
“'Hello, is Johnny home?'”
"'Hi this is his mother, what do you want?'”
“'I was wooooondering if he could come out to play'.”
“'Well he’s doing homework right now but I’ll tell him you called'.”
"As a kid, our times were divided between when we were 100% under adult control, which was when we were physically in their presence, and when we were free which was all other time."- Mrmidhoratio
"Asking 'Where are you?' when someone answers their phone."- brontosproximo
Shocked Phone Call GIFGiphyNo wonder they were all so tan...
"Regularly wearing sunscreen."- dixius99
It's amazing to see how much the world has changed in such a relatively short amount of time.
Leaving us to wonder what things will be "normal" 50 years from now, which today the very thought of would make us burst out laughing.
Extinct Flightless Bird Reemerges Thousands Of Years Later Thanks To Rare Evolutionary Process
Despite going completely extinct, a flightless bird known as a white-throated rail keeps evolving back into existence.
Through a process researchers call "iterative evolution" the sub-species keeps re-emerging.
No, this isn't a Jurassic Park joke.
Life, uh finds a way https://t.co/MVYclqpZ1m— Vinckei (@Vinckei) 1557654041.0
https://t.co/vxbv0a8v3e https://t.co/NoRYDm8Nal— Nick Stefan (@Nick Stefan) 1557662641.0
https://t.co/rPorg0hetY https://t.co/TPRQ8iE0j5— Shanna (@Shanna) 1557651380.0
Researchers from the University of Portsmouth and the Natural History Museum have been studying the white-throated rail. This chicken sized bird lives in Madagascar.
However, the species often colonizes other small islands. East of their native island is an atoll called Aldabra. It is here the species has evolved the same way multiple times to become flightless.
Lead researcher Dr. Julian Hume, avian paleontologist and Research Associate at the Natural History Museum, said,
"These unique fossils provide irrefutable evidence that a member of the rail family colonized the atoll, most likely from Madagascar, and became flightless independently on each occasion.
"Fossil evidence presented here is unique for rails, and epitomizes the ability of these birds to successfully colonize isolated islands and evolve flightlessness on multiple occasions."
That seems like a step back, doesn't it?
WTF?! This is amazing...I had no idea this was a thing, or even that it could theoretically be a possibility. So cr… https://t.co/HQwHwJXAB8— Jill Ronan (@Jill Ronan) 1557709577.0
Glitch in the simulation https://t.co/VJeoOGfCfR— DRITtheKID❌ (@DRITtheKID❌) 1557640941.0
I am in awe because zowie wow science is so cool but also in fear because wtf is this crazy shit. https://t.co/as6DXW484R— Andi-Roo (@Andi-Roo) 1557642019.0
Back from the dead 🙌 https://t.co/8vgDjMV0mt— ⭕️ Wolfgang Bremer (@⭕️ Wolfgang Bremer) 1557768903.0
Iterative evolution is when the same traits appear from a common ancestor at different times in history.
Think of it as a controlled experiment for evolution. Given the same environmental factors on a specific species, what new traits appear?
The birds lose their ability to fly since the atoll has no natural predators and an abundance of resources. However, fossil evidence shows this ending poorly for the flightless birds.
When the sub-species appeared previously 136,000 years ago, the island happened to flood, killing off the original flightless variant.
Co-author of the study, Professor David Martill said,
"Conditions were such on Aldabra, the most important being the absence of terrestrial predators and competing mammals, that a rail was able to evolve flightlessness independently on each occasion."
Despite the depictions in pop culture, evolution doesn't always add new abilities, nor is it moving in a specific direction to make a species more human-like.
What we're saying is nature is crazy.
i support you, island zombie chicken https://t.co/02MRhVYEmP— Yasss Bird (@Yasss Bird) 1557620471.0
@geekdotcom https://t.co/ZsLd6QJwbM— Manuel Barrera (@Manuel Barrera) 1557755516.0
“AND ANOTHER THING!” the white-throated rail yelled, looking to finally say the clapback they’ve been working on fo… https://t.co/8yThNI1RIK— Rob Rodems (@Rob Rodems) 1557641786.0
Rather, natural selection favors whatever helps the species survive, including instances of conserving energy. Without predators or competing mammals, the need to fly is wasted energy.
Professor Martill said,
"We know of no other example in rails, or of birds in general, that demonstrates this phenomenon so evidently.
"Only on Aldabra, which has the oldest paleontological record of any oceanic island within the Indian Ocean region, is fossil evidence available that demonstrates the effects of changing sea levels on extinction and recolonization events."
Anthropologist's Viral Thread Explains All Of The Fascinating 'Evolutionary Leftovers' That Can Still Be Found In Humans 😮
A vestigial structure is a genetically determined attribute that, through the evolutionary process, has lost some or all of its original function. Perhaps the most famous example is the appendix, which in humans has lost most of its ancestral use.
Evolutionary anthropologist Dorsa Amir started a Twitter thread explaining the phenomena. Amir is a postdoctoral researcher with Boston College.
The Twitter thread begins with a basic explanation of the structures.
It seems she just wants to watch the world learn.
The reason we know the Palmaris longus was used for getting around trees is because we share a common ancestor with primates. For example, the orangutan still uses that muscle and it is well defined. While some of our closest relatives, such as the gorilla or chimpanzee, do not employ the muscle, it still shows up in similar rates as on us.
Darwin's Tubercle was originally named the Woolnerian Tip, named for Thomas Woolner who depicted it in one of his sculptures. While the tubercle is possibly a vestigial structure, it's also possibly formed by environmental factors.
The tailbone is also known as the coccyx, which is just fun to say. There are some who claim we still need the tailbone, evidenced by the various bits of musculature attached to it. However, most coccygectomy studies show it produces little to no disadvantages for someone without one.
In birds and lizards, this third eyelid covers the eye for protection. While it doesn't perform this function in humans, the plica semilunaris is not without use. During eye movement, it helps us maintain tear drainage.
You've likely also encountered goose bumps in connection with hearing a really good song. This is because music can react in the brain similar to tangible ingestions like food or even psychoactive drugs. The dopamine release changes your breathing, temperature and heart rate, activating the goose bump response.
The grasp reflex is very strong in infants. Imaging has actually shown they can perform the action in utero. Nowadays, the grip is still strong, but not reliable. They may let go without warning. (Please do not try and pick up your child this way.)
After the thread, Amir took questions from the class.
Amir is a researcher for Boston College, studying human behavior. She and other researchers recently published a paper about the impact of your childhood socioeconomic status on your adult preferences.
Students Share The Most Hilarious Incorrect Answer They've Heard In Class
Nobody is perfect and we all make mistakes, teachers and students alike. The classroom is one of the most interesting places. Not everything the teacher says is Gospel and more often than not what stumbles out of the mouth of a student will sound more like a punchline than knowledge. But there is always knowledge in the answers, right or wrong. And often a response can be shocking and hilarious.
Redditor u/6456290 wanted to hear what the kids today are hearing in class.... What is the most hilariously incorrect thing a teacher told your class?