r/YouShouldKnow Feb 13 '20

Education YSK that if an oncoming vehicle is flashing their lights at you for no reason it's likely there is a cop up ahead attempting to catch you speeding with radar

39.0k Upvotes

You can thank that oncoming vehicle by paying it forward!

Edit: All the Australians in the comments are super triggered, SO: if you live in Australia don't flash your lights for any reason or you will apparently spend the rest of your life in prison.

r/YouShouldKnow Jun 05 '20

Education YSK: Yellowstone is NOT "overdue" for an eruption. Not only is that not how volcanos work, only 5-15% of the magma in the magma chamber under the volcano is actually molten. The rest is completely solid and stable.

69.3k Upvotes

That isn't to say that the volcano could never have another supereruption, but scientists do not believe it ever will.

The "overdue" myth stems from the average time between the three eruptions in the volcano's life. Which is the average of two numbers, which is functionally useless.

But even if it wasn't useless and it was rock-solid evidence of an eruption, we still wouldn't be overdue. There's still 100,000 years to go before we reach the average time between eruptions.

For more information, click here

r/YouShouldKnow May 08 '21

Education YSK: There is no such thing as a private beach in the State of California.

30.3k Upvotes

Why YSK: All beaches in California are public domain up to the mean high tide line with the exception of the beaches controlled by the United States Military. Although private properties may show obvious “No Trespassing” and/or “Keep Out” signs, they are in fact illegal and not allowed by the California Coastal Commission (CCC) - the body responsible for enforcing the California Coastal Act.

r/YouShouldKnow Nov 14 '24

Education YSK that disturbing, unwanted thoughts that trigger anxiety are common (yet seldom discussed) symptoms of OCD.

6.3k Upvotes

Why YSK:

Many people suffer from these symptoms and go years without mentioning them, due to fear of potential consequences or stigma. Some hallmarks of these thoughts are that they are unwanted, disturbing, and intrusive in nature. Often, they are completely at odds with your values, and usually latch onto things you hold dear.

Some sufferers may also find themselves ruminating on said thoughts, trying to wrestle with them and find meaning to alleviate the fear they cause. Some common themes include:

Harming your loved ones

Harming yourself

Harming children

Violent, graphic imagery

Embarrassing yourself/losing control in public

Sudden urges to say horrible things to people

Religious fears, such as unwanted, blasphemous thoughts in prayer or church service

Fear of being a sexual predator

Fear of cheating on your spouse/partner

Fear of losing your sanity

And several, several others. Don't panic if you didn't see yours listed here; that alone is a symptom.

OCD is highly treatable using tried and true techniques like ERP, or Exposure and Response Prevention therapy. Medication is available to those who need it, and while many reports suggest SSRIs are helpful, they aren't required for treatment.

I have this. I struggled with this for a decade, and want to make sure others know about it. Hearing that I wasn't alone saved my life, and I'm simply hoping to pay it forward. In therapy now and it's making a world of difference. I wish I'd gone 10 years sooner.

If this is something you are struggling with, you aren't alone and support is out there!

You aren't crazy.

Sources:

[MayoClinic]https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.mayoclinic.org/diseases-conditions/obsessive-compulsive-disorder/symptoms-causes/syc-20354432&ved=2ahUKEwiW3YWR69qJAxXnSDABHXqVLKwQFnoECCYQAQ&usg=AOvVaw1HhdHAxTjW2_LOHhMTlifH

[Newport Institute]https://www.google.com/aclk?sa=l&ai=DChcSEwjrtPWl7dqJAxXWt1oFHcguIbYYABAAGgJ2dQ&co=1&ase=2&gclid=CjwKCAiAudG5BhAREiwAWMlSjEMFGdos2llkoXuvTJAuHpAzlRGW0iMsCw3TkHL0Wqt3GvyYRBptSRoCgwgQAvD_BwE&sig=AOD64_0TrUx8dR7Gg3wUH6hDCptCIcgiTg&q&nis=4&adurl&ved=2ahUKEwigz--l7dqJAxVHmIQIHZMhLTYQ0Qx6BAgcEAE

[NOCD]https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.treatmyocd.com/blog/what-is-harm-ocd-guide-to-ocd-subtype&ved=2ahUKEwiklp_e7dqJAxWWTDABHSNtFdIQFnoECBMQAQ&usg=AOvVaw2PCdLM8Qgi0-LDMjQ00vqJ

[AADA.org]https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://adaa.org/learn-from-us/from-the-experts/blog-posts/consumer/overcoming-harm-ocd&ved=2ahUKEwiklp_e7dqJAxWWTDABHSNtFdIQFnoECC8QAQ&usg=AOvVaw2wZ5AYStx3tzGuLSaac2MH

[Healthline]https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.healthline.com/health/ocd/harm-ocd&ved=2ahUKEwiklp_e7dqJAxWWTDABHSNtFdIQFnoECDMQAQ&usg=AOvVaw1B3rnNMSso9P5Tf6c2I11B

[The Gateway Institute]https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.gatewayocd.com/harm-ocd-symptoms-and-treatment/&ved=2ahUKEwiklp_e7dqJAxWWTDABHSNtFdIQFnoECC4QAQ&usg=AOvVaw2x2Hx2b68cklCVr2pU9opc

[International OCD Foundation]https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://iocdf.org/faith-ocd/what-is-ocd-scrupulosity/&ved=2ahUKEwiFkoeW7tqJAxU_ZjABHZvtEgMQFnoECBwQAQ&sqi=2&usg=AOvVaw1ZuYyG9uS11qSrRAqpxikJ

r/YouShouldKnow 5d ago

Education YSK: If your vehicle gets stuck on railroad tracks look for a blue sign. It contains an emergency number and a Crossing ID to immediately halt oncoming trains.

2.6k Upvotes

Why YSK: If you call 911 the dispatcher has to figure out exactly where you are and then contact the specific railroad company which takes precious time you might not have. Every railroad crossing has a blue Emergency Notification System sign. If you call the number on that sign and give them the specific alphanumeric Crossing ID you are speaking directly to the railroad's dispatch. They can instantly radio any trains heading toward your exact location to stop potentially saving your life and preventing a massive derailment. Always get everyone out of the car first then make the call.

r/YouShouldKnow Jan 07 '25

Education YSK: if you're "confidently wrong" about something and get called out, you should just-as-confidently accept the correction and be gracious about it because this way your intellectual credibility will be preserved

8.2k Upvotes

Why YSK: it is common for people to "double down" when they get called out on an inaccuracy or a misunderstanding of something, but this makes them look less intelligent and people will doubt their intellectual credibility in future. Instead, if you're receptive to feedback and gracious about being called out, people will have MORE confidence in your intellectual credibility and integrity than they did before.

*tl;dr: Don't be stubborn about it when you're proven wrong, and instead see it as an opportunity to build people's trust and confidence in you by accepting responsibility for the error*

r/YouShouldKnow Jan 22 '25

Education YSK: Whataboutism isn’t the same as real criticism—it’s just a lazy way to dodge the point.

4.8k Upvotes

Why YSK: If you’ve ever been in an argument where someone responds to a valid criticism with “Well, what about [insert unrelated thing]?” you’ve run into whataboutism. It’s not a real counterargument—it’s just deflection.

Here’s the thing: whataboutism doesn’t actually address the issue at hand. Instead, it shifts the conversation to something else entirely, usually to avoid accountability or to make the original criticism seem invalid by comparison. It’s like saying, “Sure, this thing is bad, but look at that other thing over there!”

This is not the same as actual criticism. Real criticism engages directly with the issue, offering either counterpoints or additional context. Whataboutism just throws up a smokescreen and derails the conversation.

The next time someone hits you with a “what about X?” in a discussion, don’t fall for it. Call it out for what it is—a distraction. Stick to the point and keep the focus where it belongs. Don’t let this rhetorical dodge shut down meaningful conversations.

r/YouShouldKnow Jun 14 '23

Education YSK: Never ask a first responder what's the worst thing they have ever seen.

7.7k Upvotes

Why YSK: because it can put them back into that horrible situation that they have been trying to forget or taken years to forget. The smells, noises and the whole scenario. Instead ask what's the funniest thing they have seen.

r/YouShouldKnow 3d ago

Education YSK: that if a website forces you to call them to cancel a subscription you can just change your profile address to california

3.0k Upvotes

why YSK: companies make signing up easy but force you to wait on hold for hours to cancel however california law requires any service with online signups to also offer simple online cancellation if you change your profile zip code to any california area code the system automatically updates and the cancel online button will instantly appear on your screen saving you a lot of time and frustration.

r/YouShouldKnow Feb 22 '23

Education YSK this trick for when to use “I” vs. “me.”

10.3k Upvotes

(Scroll down to view the trick!)

Most people were taught to be suspicious of “and me”, because it might make us sound uneducated, but this is not true. The question of whether to use “I” or “me” comes down to whether you are using the word as a subject or as an object in the sentence.

“I” is always used as a subject, while “me” is always used as an object.

• “I went to the store with Robert.”

• “Robert and I went to the store.”

In both examples “I” is the person who performed the action, which makes “I” the subject of the sentence.

• “Alice gave Ursula and me tickets to the theater.”

• “The vase is a gift from my husband and me.”

In both examples, “me" is used as an object in the sentence. “Me” is never the subject.

  • A QUICK TRICK to figure out if “l” or “me” should be used is to remove the other person from the sentence and see if it still sounds correct. You wouldn’t say “The vase is a gift from I”, nor would you say “Me went to the store.”

Why YSK: This will make your writing and speech look and sound better. Sounding intelligent can open doors for people.

r/YouShouldKnow Mar 23 '26

Education YSK: If you appear in a YouTube video without consent, you can submit a privacy complaint and YouTube will take you out of the video.

4.4k Upvotes

Why YSK: There is a trend where public agitators are getting in people’s personal space in shopping centers and post offices, yelling profanities at innocent people in hope of getting a reaction. Their whole aim is for you to touch their camera equipment so that they can pepper spray you or for the police to unlawfully arrest them, so that they can sue the police department.

I saw myself in one of their videos and filed a privacy complaint on YouTube with timestamps and within a few hours, YouTube removed my footage from their video.

Don’t let these clowns get away with harassment!

r/YouShouldKnow Oct 17 '25

Education YSK: The difference between “gaslighting” and lying…

4.7k Upvotes

As someone in the therapeutic field I’ve noticed this term has become something thrown around A LOT! And particularly by teens/college age people.

The problem is I hear it used incorrectly all the time in real life and on reddit.

Here’s what gaslighting ISN’T…

(After a married man goes to another woman’s house and comes back home)

Wife: where were you?

Husband: at Tom’s house.

See, that is just lying. But I’ll hear people in these situations say, he/she gaslighted me.

Here’s an example of what gaslighting IS..

(Married man goes to another woman’s house and comes back home)

Wife: where were you?

Husband: at Tom’s house, remember I told you I was going there?

Wife: no you didn’t.

Husband: yes I did! Remember I told you and you even said to tell him hi for you. I can’t believe you don’t remember that!”

This example is assuming everything he is telling her is made up and never actually happened, but he explains it in a way that makes the person start to think that maybe that conversation did happen.

See, what gaslighting is, is making someone believe reality is false and the illusion they have created is real

This term comes from the 1938 stage play “Gas Light”, in which a husband attempts to drive his wife crazy by dimming the lights (which were powered by gas) in their home, and then he later denies that the light changed when his wife points it out. He further continues to try and make her believe the lights are the same brightness as they always have been.

All this just to say, gaslighting is lying but lying isn’t necessarily gaslighting. Hopefully this helps you understand the difference.

Why YSK: It’s helpful to understand if this applies to you and someone you trust. Also, using this term precisely and only when applicable helps the word maintain its emotional significance.

r/YouShouldKnow Oct 03 '21

Education YSK that PBS puts out some of the best produced and interesting documentaries out there. They do not advertise and all of them are completely free on their website.

32.0k Upvotes

Why YSK: Because PBS is publicly funded so they have no need to advertise or charge for their work. But they put out some of the very best documentaries that exist.

They are informative, entertaining and fact checked. They have them on everything from war to football concussions... And everything in between.

All of them are available for free on their website. No strings attached. You already paid for them with your tax dollars.

https://www.pbs.org/wgbh/frontline/films/

r/YouShouldKnow Jun 20 '20

Education YSK that abortion is available online, if your laws prohibit it, or if you feel unsafe getting an abortion in public.

20.0k Upvotes

First of all, women shouldn't feel ashamed, or in danger when getting an abortion, but people are willing to label it as murder, and will treat it as such.

https://aidaccess.org
More websites thanks to other informed users:
https://womenhelp.org/
https://www.womenonweb.org/

If none of the above sites are available within time, and you live in the US, with the exception of 2 states, there is another, option available in your country. Misoprostol I am not too informed on this method, so I recommend you do your research on them. I cannot find the 2 states claimed to not condemn this drug either, but I am very bad at searching for states for laws this specific. Do your research on misoprostol if this is your final option, please, and consult a professional on how it may affect you.

Important Edit: I just realized that there might be limited accessibility during a pandemic. I apologize to those countries that might be restricted from this service.

If you cannot access abortion services for any reason, AidAccess.org will mail you the abortion pills for a donation amount of your choice.

If you’re in an area where abortion is banned or restricted, you aren’t out of options. AidAccess is run by physicians and women’s rights advocates who offer abortion services internationally to women who may not otherwise have access. This includes the USA where abortion is heavily restricted in some states and often very expensive.

After a brief questionnaire, an advocate will mail a valid prescription, instructions, pills (plus some extras) and will even walk you through the steps if needed via SKYPE. The organization is based on donations, no minimum amount required.”

EDIT: I forgot to mention that the user whom shared me this information encouraged this to get reposted, so I encourage you all to post this wherever it is relevant, as recently another US state banned abortion, even if it involves incest, rape, and/or birth defects.

r/YouShouldKnow Oct 27 '22

Education YSK it's lo and behold, not low and behold

8.7k Upvotes

Why YSK: If you spell it low and behold, you're spelling it incorrectly and I assume you want to spell it correctly.

r/YouShouldKnow Mar 29 '21

Education YSK: Cigarettes make up more than one-third—nearly 38 percent—of all collected litter. Disposing of cigarettes on the ground or out of a car is so common that 75 percent of smokers report doing it.

23.6k Upvotes

r/YouShouldKnow Jun 22 '20

Education YSK: Brandon Sanderson, as well as being one of the foremost Fantasy writers today, moonlights as a college professor. He has posted all his lectures for free online. Any hobbyist or aspiring writer could learn a lot from him.

36.2k Upvotes

Brandon Sanderson (Way of Kings, Mistborn, Steelheart) apparently likes to take time off from writing a fantasty epic every 6 months to teach college students.

Link to the first lesson here: https://www.youtube.com/watch?v=-6HOdHEeosc&list=PLSH_xM-KC3Zv-79sVZTTj-YA6IAqh8qeQ

r/YouShouldKnow Jun 16 '25

Education YSK that turning on subtitles while watching shows can boost your focus, memory, and vocabulary, even if you're fluent.

5.1k Upvotes

Why YSK: Reading captions while listening helps your brain build stronger connections, activating both visual and auditory pathways simultaneously. Research shows this dual engagement enhances comprehension, attention, and recall, even for native speakers watching in their own language. It’s like free mental exercise: you learn new words, catch nuances, and naturally stay more engaged.

Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5214590/

r/YouShouldKnow Aug 08 '20

Education YSK that asking your doctor to chart your request and their denial of testing will often result in getting the diagnostic tests you want

24.8k Upvotes

Plain and simple. Doctor refuses blood work or another diagnostic test? Ask them to put in your chart that you specifically requested the test and they denied it. Most doctors will just send you for the test.

EDIT- I have stated some things in the comments I thought I’d add up here just so I don’t need to repeat myself

Don’t be a jerk to your physician. Do not be hostile or threatening. Ask politely for things to be documented.

If you have the resources to “shop” for a doctor, please do! Look around until you find somebody who you trust completely.

This is for actual medical problems that you are experiencing and not for curiosity’s sake. Medical testing is not something you do for fun.

If you are asking for something unreasonable your doctor will refuse and still chart it. They are still in control of your health and should not be providing potentially dangerous testing because you asked for it. This includes any sort radiology, rare, or invasive procedures.

Thank you

r/YouShouldKnow Feb 24 '20

Education YSK: Sal Khan, founder and CEO of Khan Academy, created over 6,500 videos that can educate you (for most undergrad classes) on almost every topic in physics, math, astrology, history, economics and finance FOR FREE. His videos are great extensions to learning and help fill gaps of knowledge.

60.5k Upvotes

You can check his videos out on YouTube and Khan Academy!

r/YouShouldKnow Oct 16 '20

Education YSK: "Octopuses," "octopi," and "octopodes" are all acceptable pluralisations of "octopus." The only thing unacceptable is feeling the need to correct someone for using one of them.

31.2k Upvotes

Why YSK? When you correct people for using "octopuses," you not only look like a pedant, but the worst kind of pedant: a wrong pedant.

While "octopi" is also acceptable as its plural form, "octopuses" needs no correction. Hell, even "octopodes" is fine and arguably more correct than "octopi," because of the word's Greek origin.

edit for those saying I made this up: https://www.merriam-webster.com/words-at-play/the-many-plurals-of-octopus-octopi-octopuses-octopodes

edit 2 for those arguing one of these is the right one and the other two are wrong: you're missing the entire point.

r/YouShouldKnow Oct 21 '22

Education YSK all modern dictionaries define the word “literally” to mean both literally and figuratively(not literally). This opposite definition has been used since at least 1769 and is a very common complaint received by dictionary publishers.

10.6k Upvotes

Why YSK: Many people scoff when they hear the word literally being used as an exaggeration (“she literally broke his heart”). However, this word has always had this dual meaning and it’s an accepted English usage to use it either way.

Edit: a good discussion from the dictionary people on the topic.

r/YouShouldKnow Apr 16 '20

Education YSK: Harvard university is offering 64 online courses FOR FREE on all different types of subjects!

35.0k Upvotes

r/YouShouldKnow Nov 01 '20

Education YSK That dull knives are far more dangerous than sharp knives.

25.4k Upvotes

“How would a sharp knife be safer than a dull one? Wouldn’t it cut you easily?” You may ask. That is the truth, however you should know that most accidents in the kitchen are a result of a dull knife.

Why YSK: With a sharp knife you don’t need to work hard to cut. You apply minimal pressure and the knife does the rest. You have full control of the blade, however, if you are using a dull knife, you are forced to apply much more pressure, and the heavier you push, the less control you have meaning when pushing hard when using a dull knife you are much more likely to lose control and stab yourself full force in the hand because you couldn’t stop the knife in time when it slipped. With a sharp knife you require very little force, and as a result have much greater control over what you are doing making cutting with a sharp knife much safer than cutting using a dull one.

u/Amonette2012 Also makes a very good point here in explaining how you're more conscious and careful when handling a sharp knife.

Also with a sharp knife, you are less likely to think 'this is fine for getting ice cream out of the carton with' and stab yourself in the hand.

r/YouShouldKnow May 14 '20

Education YSK the saying goes “nip it in the bud”, not “nip it in the butt”.

19.0k Upvotes

Very common mistake. The saying refers to nipping a bud before it grows into a flower, or making sure a problem is handled before it becomes a bigger one!