That blood is actually blue until it gets in contact with air
Easy to proof: Vaccumated capsule to draw blood.
No contact with air and still red.I remember my science teacher in seventh grade singing this and just being very confused because my mother who was a nurse said it was just a dark red.
You’ll wet your bed if you play with fire.
Never heard this before!
There is no such thing called umami.
Well there is, its just not a flavor like salty, its a way of taste from what i learned. Idk how to discribe it myself
You can describe it as umami
I was taught that Pluto is a planet. How could they have been so wrong???
My sysadmin professor told me to not learn about tape backups because they are going away soon
Like 3 years later ransomware was invented
Idk you can only ‘learn’ them if you have one and even the shittiest tape drive I could find as a consumer doesn’t help me at all with a tape library. We have our tape admin (=our architect) who we thank god every day for because we didn’t have to bother with it. Now he’s retiring this year… F
We had one in the lab though and just ignored it
tape backups are definitely still a thing. it’s one of the cheapest ways to store a shitload of data for a long time
I spend a portion every day removing tapes, shipping them offsite and inserting new tapes
Annoying but must be done
can i have a job at your place
No but look into datacenter night shift work. Where i am nobody wants that shift. Working in a datacenter is pretty fun
interesting. what sort of resumes are you looking for in a data center? security clearances? i have a devops resume, AWS, Linux etc.
Pretty much that but also ability to use tools and basic knowledge of air conditioning etc
how do I find a data center role in particular? normally i am searching “Linux” to get devops roles.
holy crap a sysadmin class? that is wild, son. i must be an old man
I went to a trades school which offered IT computer systems as a 2 year diploma. Fast track to a job back in the early 2010s. That path would never get you into IT today lol
The specific class I mentioned was windows system administration
Hear about pluto? Pretty messed up huh?
You know that’s right!
Trickle down economics (well, it’s not like there was a time when it was true)
That tastes have specific regions on the tongue. We actually had to protest when that shit was taught at our son’s elementary school. Don’t know if it came up for our younger daughter.
Poor kids at school had old atlases where Germany was still separated. But I guess that’s just obsolete and not false knowledge.
Yeah, I remember that one. We even did an experiment to “prove” it. I was like, “I kinda taste it everywhere”. I don’t remember what the punishment for that one was exactly, but it was pretty severe, and I didn’t do anything wrong.
I remember getting detention on first grade for telling my classmate that a whale had beached here in finland. It happened, it was on the news. Same thing again after I told my classmate about some asteroid that is going to kill us all. On 6th grade the whole class was given detention for not having music books with us because the teachers had decided to change the schedule that morning.
Yeah, a lot of people seem to become teachers because they like being in a room full of people who won’t question them.
That particular teacher in the story was also let go at the end of the year, though, related to her treatment of students. It was kind of dramatic.
There’s a weird thing here. I totally accept that the traditional tongue map is pseudoscience and debunked, but if you’re paying attention to something like wine or good chocolate, letting it spread across your whole tongue really does seem change the flavor and bring new aspects to what you’re tasting.
My subjective impression is that there is some effect to exposing the whole tongue to a stimulus, and I’d really like to understand it more - but when you search the web, you pretty much just get deconstructive articles about the old model, and not much about what might actually be happening.
“You need to learn this because you won’t always have a calculator on you!”
That wasn’t so much a “fact” told in school as it was a prediction, and it was true for them. Some people carried pocket calculators, but most people didn’t. Some supermarkets has calculators built into their carts, but most didn’t.
Failing to predict society’s norms in 20 years isn’t the same as teaching a false fact.
Some supermarkets has calculators built into their carts
wat
Tiny photocell powered calculators used to be everywhere. There were “thin” ones to fit in your Costanza sized wallet, Mousepads with them built in, and my wristwatch in 6th grade had one with tiny rubber keys.
It was a magical time till be alive. 5318008
Yep, back in the 90s they were in some places. My local supermarket had one like this, except without the annoying ad on the left side.
The same was told to me even as everybody already had mobile phones with calculators in them or even iPhones
Basic mathematical literacy is a prerequisite to being able to use a calculator.
I feel have super power by being to calculate accurate tips without needing to crack out my phone.
- that Pluto is a planet
This was my first thought as well!
Pluto is a great test for what types of person someone is.
If someone says Pluto is still a planet. They have a personality where they are immovable and can’t accept scientific change.
If they do say pluto is a new kind of dwarf planet they arw more accepting of new information and belive in the scientific method.
It’s a great quick test when meeting news people.
I recently heard that they discovered hundreds of Pluto sizes “planets” beyond Pluto, so they had to decided do we add 100 more planets or just demote Pluto to planetoid and ignore the rest
Eris? Didn’t Sephiroth kill her?
Well, Pluto being reclassified as a dwarf planet doesn’t really have anything to do with the scientific method. “Planet” is a manmade concept, we just changed the definition for that classification to avoid having to add the dozens of bodies we discovered since Pluto that would have also met the old definition.
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PLUTO IS A PLANET!
I thought it was Mickey Mouse’s dog 🤔!
IT’S BOTH AT THE SAME TIME
What? As in Schrödinger’s cat? Interesting!
Why does a mouse own a dog? And how come the mouse is also friends with another dog? What’s going on there?
Ok Jerry.
Eh, it’s more like our definition of what a planet is changed. I still think of Pluto as a planet.
It’s a planette
I was taught that Jupiter had 17 moons, Saturn has 12 and Pluto has 1. Many more have been discovered since.
Then there’s the whole “different areas on your tongue taste different flavors.” Like you only taste sweet with the tip of your tongue, the middle tastes salty, etc. I remember being given various substances by my fifth grade teacher like sugar, coffee, lemon juice, table salt etc. and we tried putting them on different areas of our tongues and we were like “…no, we taste everything everywhere.”
Were you guys eating coffee grounds in your 5th grade science class? Your next teacher either hated it because you guys were bouncing off the walls or loved it because you were all wide awake and paying attention.
We were each given like a quarter teaspoon of grounds and a toothpick.
I was always so confused by the tongue areas because it never seemed to work for me. Especially sweet, I tasted sweet far more at the back than on my tip.
The United States operates on the principle of three co-equal branches of government, which check and balance each others power.
This is painful.
That humans came out of Africa once and then settled the rest of the world. In reality there was a constant migration of humans in and out of Africa for millennia while the rest of the world was being populated (and of course it hasn’t ever stopped since).
I love how much DNA analysis has completely upended so much “known” archaeology and anthropology from even just a couple decades ago.
Whats about DNA??
Gene sequencing wasn’t really a thing (at least an affordable thing) until the 2010s, but once it was widely available archaeologists started using it on pretty much anything they could extract a sample from. Suddenly it became possible to track the migrations of groups over time by tracing gene similarities, determine how much intermarrying there must have been within groups, etc. Even with individual sites it has been used to determine when leadership was hereditary vs not, or how wealth was distributed (by looking at residual food dna on teeth). It really has revolutionized the field and cast a lot of old-school theories (often taken for truth) into the dustbin.
Trickle down economics are an effective way to redistribute wealth
Did we conclude that, I thought its still heavily debated.
Some argue in the 50s and 60s the US was spending Europe’s gold to build highways and infrastructure, gifting Americans the wealth with a continuation of the new deal, they then defaulted in 1971 as inflation eroded foreign debt owed.
Some feel some form of debt accrual is how we derive such a consumption focused standard of living, which is misallocated capital that ends in someone holding the bag when it can’t realistically be paid back, or when population doesn’t grow fast enough like in Japan or most of the developed countries.
How planes generate lift.
What doesn’t help is that plane pilots are basically taught a different version of physics to spare them from liquid dynamics and to see the forces on an aerofoil as independent ones which makes it all pretty confusing for a layperson trying to get a basic understanding of both and marry the two
Did they finally find that out? Last time I checked even PhDs in aerospace engineering still added “we think” at the end of their explanations.
It is known yeah. Another user commented it. If you take a wing and put it in a wind tunnel you can put sensors in its wake to measure the pressure. By manipulating the fluid flow you can change the pressure. So low pressure on top and high pressure on bottom. Multiply that by the surface area and you get a force. Smaller force on top of the wing, lower force on the bottom of the wing. So the wing goes up. Of course theres some physics going on in the fluid that explains the change in pressure, but this is just a quick and simply-put explanation because I took a fat amount of zquil and am tired.
Source: Im getting a PhD in aerospace engineering
Edit: I had to do this in a wind tunnel during one of my undergrad courses. It was fun playing with the wind tunnels, would recommend
The wing experiment with hundreds of pressure sensors shows lower pressure on top and more on bottom.
NASA has a webpage on aeronautics that says lift is the mechanical force created by a solid object turning a flow of liquid or gas. They also have an equation for calculating lift for any solid object/fluid combo.
