Recent comments in /f/explainlikeimfive
Jazzkidscoins t1_jeapcdw wrote
Reply to eli5: why do we have those moments where we are like “i remember this exact moment happening before” by Randoms_potato123
I read an article about a study int deja vu. It basically said it was a memory short circuit. Every day you brain loads everything that happened into short term memory. At some point during the day, usually while you sleep, your brain processes all these memories and decides what needs to go to long term or permanent memory, everything else is tossed to the side. So, whenever you do something your brain scans your long term memory to see if you have done this before. If you have it can provide useful details. If not it loads it into short term memory and the process starts all over.
The important thing is whenever you do something your brain scans long term memory to see if you have done this before. Deja vu can happen if your brain hiccups and for some reason starts loading whatever you are doing at the time into long term memory. So your brain is scanning long term memory as you are writing to long term memory. It makes what you are doing at that exact moment feel like a memory even though it isn’t. It’s also why you get that weird feeling because your brain knows something is not right and it’s trying to figure out what it is.
sibelius_eighth t1_jeap1o2 wrote
Reply to Eli5 Why is there still a famine in Africa despite the fact that they have been receiving foreign aid for decades? by Illustrious-Pen9569
The thread title bothers me so much. Africa is huge, made up of more than 50 countries. It's like if someone read about the Flint water crisis in Michigan and then made a topic with the title 'Why does America suffer from lead poisoning when it's so rich?'
ronerychiver t1_jeap0sm wrote
Reply to comment by apple_cheese in eli5: How does GoodRX (or any prescription savings group) work? by fourtwenny2389
“WEEE WOOO WEEE WOOOO! SOUND THE SOCIALISM SIREN!!! WE GOT A COMMIE OVER HERE!!” -GOP probably
[deleted] t1_jeaopku wrote
Reply to Eli5 what is it in the food of fast food restaurants that makes it bad e.g. being linked to cancer / mental problems. Does it have a negative impact on the gut flora? I’m not talking like sugary food more like actual food KFC- chicken, McDonald’s beef patty etc by Reasonable-Umpire-93
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GalFisk t1_jeao113 wrote
Reply to comment by Red__M_M in ELI5: if a flame needs oxygen to burn then why it doesn't our atmosphere explode from a single flame? by [deleted]
Pure oxygen? I never did play around with that, but I did make an arduino-powered fuel meter which would inject precisely the right amount of propane. That was a big improvement from "spray and pray", even though I did get quite good at it with butane.
[deleted] t1_jeannpv wrote
Reply to comment by Gnonthgol in Eli5 Why is there still a famine in Africa despite the fact that they have been receiving foreign aid for decades? by Illustrious-Pen9569
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yungkark t1_jeani5b wrote
Reply to eli5: why do we have those moments where we are like “i remember this exact moment happening before” by Randoms_potato123
remember you don't have any access to objective reality. everything you see is your brain's reconstruction of nerve signals coming from light hitting your retinas. optical illusions happen because sometimes your brain misinterprets the inputs, which highlights the fact that what you're seeing isn't "real" but a representation of reality that isn't always accurate.
your memories are stored in your brain, they're also not real and they don't necessarily correspond to reality. you can make time slow down through certain methods that cause data to load into your short term memory incorrectly. time isn't really slowing down, but your brain's stretching out the experience in your memory and since you live in brain-world, not real-world, you experience the stretched reality.
so if your brain accidentally sticks something in your short term memory before it consciously registers the thing, once it registers the thing it looks back and says "oh that already happened." it has no way of accessing the real world to correct itself, it can only trust its own reconstructions.
Spongclinx t1_jeanek0 wrote
Reply to comment by mugenhunt in eli5: why do we have those moments where we are like “i remember this exact moment happening before” by Randoms_potato123
I also experienced a moment where I realized that this particular event already happened and as I try to recall it where and when I remembered that it was from one of my dreams.
slimsag t1_jean6z0 wrote
Reply to comment by Zumazumarum in ELI5 Why are pickles not just called pickled cucumbers? by Shabless
> Pickling is the process of preserving or extending the shelf life of food by either anaerobic fermentation in brine or immersion in vinegar.
From https://en.wikipedia.org/wiki/Pickling
> their are many types of salt brine fermentations, like soy sauce, but wouldn't call that pickled either.
Soy sauce is indeed a fermented salt brine. But what food is it preserving? None, just the liquid itself. So it's not pickled, it's just fermented.
But if you use soy sauce to ferment and preserve say vegetables, then those vegetables are said to be /pickled/. There's even a word for it (Shoyuzuke)
Red__M_M t1_jean4l4 wrote
Reply to comment by GalFisk in ELI5: if a flame needs oxygen to burn then why it doesn't our atmosphere explode from a single flame? by [deleted]
I learned this playing with potato guns. There is an optimal fuel level beyond which the power quickly declines to zero.
The solution, of course, was to saturate the chamber with fuel and close it. Then I injected oxygen. Worked like a charm.
mugenhunt t1_jeamkuc wrote
Reply to eli5: why do we have those moments where we are like “i remember this exact moment happening before” by Randoms_potato123
There's a French term for this, deja vu. We don't know exactly why it happens, but many people experience this feeling.
There is one theory that our brains have two settings for events, "this is happening right now" and "this already happened" and that normally, our memories of events go from one category to the other after they conclude. After we're finished with something, our brain stores it in the past category. The idea is that deja vu might be what happens when our brain gets that process mixed up, and we feel that the event is happening right now, and already happened at the same time.
Halvus_I t1_jeamb1n wrote
Reply to comment by Hisei_nc17 in eli5 why ancient historical buildings haven’t been kept up? Why are buildings like the Parthenon and the Colosseum in such disrepair? Greece and Rome/Italy have existed the entire time? by PickledSpace56
Popped out fully armed and armored.
https://www.wattpad.com/86490100-the-tale-of-athena%27s-birth
DiscussionGrouchy322 t1_jealyxp wrote
Reply to comment by Supermichael777 in Eli5 Why is there still a famine in Africa despite the fact that they have been receiving foreign aid for decades? by Illustrious-Pen9569
one time two times (no apostrophe) otherwise well said thanks.
its-a-throw-away_ t1_jealsuz wrote
Reply to Eli5 Why is there still a famine in Africa despite the fact that they have been receiving foreign aid for decades? by Illustrious-Pen9569
Your question is painfully ethnocentric, as I will illustrate:
Let's reverse your question. I presume the country in which you reside does not receive "foreign aid." If so, why then is famine not rampant where you live?
Whatever conditions prevent famine in your country (fertile land, water and irrigation, reliable and efficient transport infrastructure, political stability, etc.) do not exist where famine prevails, regardless of the measure of foreign aid provided.
InTheEndEntropyWins t1_jealqnp wrote
Reply to comment by carlos_6m in ELI5: if protein is broken down into peptides in the stomach/digestive tract, why would consuming something like "active collagen" do anything? by Alexander_Elysia
That was just a one off study I found. There are numerous studies and sources. Pretty much every decent study and source suggests that they work.
​
>A Collagen Supplement Improves Skin Hydration, Elasticity, Roughness, and Density: Results of a Randomized, Placebo-Controlled, Blind Study
>
>https://pubmed.ncbi.nlm.nih.gov/31627309/
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>Studies show that collagen peptides may actually slow signs of aging by keeping the skin hydrated, which prevents wrinkles.
>
>https://health.clevelandclinic.org/what-do-collagen-peptides-do/
carlos_6m t1_jeakmv1 wrote
Reply to comment by InTheEndEntropyWins in ELI5: if protein is broken down into peptides in the stomach/digestive tract, why would consuming something like "active collagen" do anything? by Alexander_Elysia
Theyre testing a compound with a crapton of other things known to work, not just collagen, and its a test against placebo, that doesn't stablish mechanistic at all you nugget!
Ippus_21 t1_jeaj7zf wrote
Reply to comment by VinylJitsu in ELI5 - How do competitive eaters such as Eric the electric not damage their bodies? by Iron-Wall
This. They take a lot of risks. Things like twisted bowels, ruptures, reflux, you name it.
mmmmmmBacon12345 t1_jeaia7l wrote
Siberian tigers only technically live in Siberia
Sibera is all of Russia west of the Ural mountains which is like 80% of Russia's area and like 4000 miles wide
The Siberian Tiger's range is Korea and the edges of China and Russia near there. Technically that part of Russia is Siberia but Scandinavia is closer to New England than the tigers range in Russia
MELAVIN t1_jeagwum wrote
Reply to comment by rimshot101 in Eli5 Why is there still a famine in Africa despite the fact that they have been receiving foreign aid for decades? by Illustrious-Pen9569
Actually in Kenya most foreign aid is used very well. That's because countries that forward donations have strong systems to ensure the money is utilised. The government funds set aside to fight famine are all used up by corrupt individuals.
Mammoth-Mud-9609 t1_jeagg0r wrote
Reply to comment by chosen-username in Eli5: why are there tigers in Siberia but not in Scandinavia? by chosen-username
In human civilisations Greece was about as far north as they got further north and the wolves and bears were far better suited to the conditions.
its-a-throw-away_ t1_jeag2ao wrote
Reply to comment by NameUnavail in ELI5: if a flame needs oxygen to burn then why it doesn't our atmosphere explode from a single flame? by [deleted]
Actually, fire needs 4 things:
- oxygen
- fuel
- heat
- chemical reaction
Remove any of these elements, and ignition cannot occur.
InTheEndEntropyWins t1_jeag08x wrote
Reply to comment by carlos_6m in ELI5: if protein is broken down into peptides in the stomach/digestive tract, why would consuming something like "active collagen" do anything? by Alexander_Elysia
>Thats an important thing, it doesn't. Evidence doesnt back it up and neither do Biological mechanisms.
Studies actually do show that collagen peptides do work. That means your mechanistic understanding is wrong.
>The test product significantly improved skin hydration, elasticity, roughness, and density
>
>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6835901/
Target880 t1_jeae2f2 wrote
Reply to comment by chosen-username in Eli5: why are there tigers in Siberia but not in Scandinavia? by chosen-username
Not really. The has been a lion in Greece and the Balkans up to Hungary and Ukraine. The last one survives in part of Greece until 4th century AD.
​
Northern Europe has quite recently been covered with ice and human migration has followed the retreat of the ice. The large ice cover had its largest extent 20 000 years ago when it ended in northern Germany.
The lynx is the largest feline, wolf, and bears are the largest predators.
Exactly what life was there before the last ice age is unknown. A kilometer-thick layer of ice even smooths out the bedrock so there is no evidence of what lived in Scandinavia before the ice retreated. That is lived recently before it, there is evidence od what lived millions of a year ago in for example sandstone formations.
Pocok5 t1_jeacz6y wrote
Reply to comment by SiCon6 in Eli5 Why is there still a famine in Africa despite the fact that they have been receiving foreign aid for decades? by Illustrious-Pen9569
You joke but one of the biggest problems of actually delivering aid to the hands of the people who go hungry is that along the way it passes through the hands of a local warlord and magically turns into AK-47s. Trying to skip the warlord also has drawbacks, in the form of said AK-47s being used to convince aid workers to hand over the rest of the goods. It mostly boils down to a catch 22 of "effective delivery of aid needs a stable and competent government to support it" and "people mostly experience famines because they don't have a stable and competent government".
Gnonthgol t1_jeapull wrote
Reply to comment by [deleted] in Eli5 Why is there still a famine in Africa despite the fact that they have been receiving foreign aid for decades? by Illustrious-Pen9569
A lot of aid is aimed at supporting these stupid governments or to destroy the local economy to benefit governments and companies in post-developed nations. When you look into the details it becomes harder to argue that these countries are better with foregn aid.