r/YouShouldKnow • • 19h ago

Health & Sciences YSK that thinking about doing a task releases nearly the same dopamine as actually doing the task, which can lead to procrastination.

3.1k Upvotes

Why YSK: this especially applies for those of us with ADHD and ADD, but not exclusively. Science has shown that thinking about or imagining doing a task can release anticipatory dopamine, which registers in the brain as nearly identical to dopamine from completing the task.

This can cause you to feel accomplished simply from thinking about doing something, and thus lose the motivation to actually accomplish the task.

For those of us with ADHD and ADD, the medications we take to provide dopamine often make this even more extreme; thinking about doing something can release anticipatory dopamine, while the medications help supplement task-based dopamine, meaning that you can actually end up feeling more accomplished by thinking about doing something then you would by doing it.

https://www.sciencedaily.com/releases/2018/12/181210144943.htm


r/YouShouldKnow • • 16h ago

Technology YSK: Passkeys and physical security keys make you immune to phishing (and if you buy physical keys, always get two

1.1k Upvotes

Why YSK: Passwords are fundamentally broken because they rely on you not getting tricked. If you click a malicious link that perfectly mimics a real login page, you might type in your password and hand it straight to a scammer. Passkeys completely eliminate this risk.

Passkeys fix this by tying your login directly to your device and the official website.

Here is how it works: instead of typing a password, you log in using your fingerprint or a face scan. If you are using a physical security key, you must first enter a specific PIN and then physically tap the key. This guarantees that even if someone steals your physical key, they cannot access your accounts because they do not know your PIN.

The biggest advantage is that passkeys are strictly bound to the official website domain. If you accidentally click a fake phishing link where even a single letter in the web address is changed, your device and the passkey instantly recognize the mismatch. The key simply refuses to authenticate or send any data. Even if the human eye is completely fooled by how identical the fake website looks, the key cannot be tricked. It will not let you log in, keeping your account perfectly safe.

To check if a website supports this, just go into your account security settings on that specific site and look for the option to add a passkey. From what I've seen, anywhere you have the option to add a digital passkey, you automatically have the option to add a physical hardware key as well.

I highly recommend setting up a digital passkey on your device first, since it is free and incredibly easy to use. However, you should not rely on a single device as your only key. If the device storing your passkey breaks, gets lost, or stops working, you could get locked out of your accounts and forced to rely on standard account recovery methods.

This is why you should also add physical hardware keys to your accounts alongside your digital device. They are actually much more affordable than most people think. If your primary device is ever broken or missing, you just plug the physical backup key into a computer or tap it on the back of a new device via NFC, enter your PIN, touch the key, and you are instantly logged in.

If you decide to go the hardware route, the golden rule is to always buy two. Keep your primary key on your keychain for daily use, and leave the backup key safely at home. This way, if you ever lose the one you carry around, you won't permanently lock yourself out of your own accounts.


r/YouShouldKnow • • 1d ago

Technology YSK: if you are looking after an elderly relative or otherwise impaired person, you can control their TV remotely with Jubilee TV

910 Upvotes

Why YSK: It’s a relatively inexpensive TV plug in. You can control your loved one’s TV from your phone, video call them on the TV, etc. My grandfather has Alzheimer’s and vascular dementia. Until recently he was able to stay in an assisted living facility close to us. This product allowed us to put the baseball on for him as he’s often not able to use the remote. Serious quality of life aid.

(This post is not sponsored or anything. I’ve been really happy with the product overall, but the main reason I’m making this post is that I had to cancel the subscription recently and it was so so easy! Kind, had fail safes in place to make sure it wasn’t the elderly person making a mistake, and cancelled with no road bumps or guilt trips along the way. I also called their support line when I was first setting it up, and a competent and helpful human being picked up the phone after <5 minutes on hold).


r/YouShouldKnow • • 3d ago

Arts & Entertainment YSK the Kanopy app, powered by your library card, gives you free access to an incredible spooky movie collection!

1.8k Upvotes

Why YSK: You don’t have to pay a dime to watch a huge collection of horror films and other movies appropriate for the Halloween season. Just get the Kanopy app, enter your library details, and check out their “Crypt Collection.”

I will list the first 100 movies I see on it.

  1. Eyes Without a Face
  2. I See You
  3. Maximum Overdrive
  4. The Ninth Gate
  5. Devour
  6. The Host
  7. 10 Cloverfield Lane
  8. Scream
  9. Diary of the Dead
  10. Lizzie
  11. Hell of a Summer
  12. The Fog
  13. The Ring
  14. My Bloody Valentine
  15. Cloud
  16. Angel Heart
  17. The Old Dark House
  18. Skincare
  19. Sleepaway Camp
  20. The Woman in Black
  21. Child’s Play
  22. Manhunter
  23. Invasion of the Body Snatchers
  24. Scream 2
  25. Mary Shelley
  26. Presence
  27. V/H/S
  28. The Exorcist III
  29. Late Night with the Devil
  30. The Return of the Living Dead
  31. The Autopsy of Jane Doe
  32. The Love Witch
  33. Peeping Tom
  34. Scream 3
  35. Psycho Beach Party
  36. Let the Right One In
  37. The Invitation
  38. Your Monster
  39. 1408
  40. Rabbit Trap
  41. Twilight Zone: The Movie
  42. Resurrection
  43. The Last Matinee
  44. The Lair of the White Worm
  45. Under the Skin
  46. The Silence of the Lambs
  47. Talk to Me
  48. Ringu
  49. The Babadook
  50. The Wicker Man
  51. Life After Beth
  52. Event Horizon
  53. House
  54. Don’t Look Now
  55. Beyond the Wasteland
  56. The Monster
  57. Evil Dead 2
  58. Rebecca
  59. Sinister
  60. Mother
  61. Down a Dark Hall
  62. The Monkey
  63. Friday the 13th
  64. Immaculate
  65. Dial M for Murder
  66. In a Violent Nature
  67. Lifeforce
  68. Together
  69. An American Werewolf in London
  70. Cold Storage
  71. Clue: The Movie
  72. House on Haunted Hill
  73. The Front Room
  74. Rosemary’s Baby
  75. The Loneliest Boy in the World
  76. Get Away
  77. What Ever Happened to Baby Jane?
  78. Longlegs
  79. My Bloody Valentine
  80. Dominion
  81. Carnival of Souls
  82. Lake Mungo
  83. Jacob’s Ladder
  84. Hannibal
  85. Hannibal Rising
  86. Audition
  87. Shutter
  88. Dangerous Animals
  89. The House That Jack Built
  90. Invasion of the Body Snatchers (1978)
  91. Tales of Halloween
  92. The Rental
  93. Heretic
  94. The Gate
  95. Nosferatu
  96. Sister Midnight
  97. The Cabinet of Dr. Caligari
  98. Heel
  99. Suspiria (1977)
  100. The Astronaut

NOTES/DISCLAIMERS: This list of 100 only scratches the surface. You’ll need to spend some of your free credits to watch many/most of these, and the credits will replenish at the start of the month. Kanopy may not be available in your area. I cannot personally vouch for the quality or spookiness of every movie listed here.

Thank you for supporting your local library!


r/YouShouldKnow • • 3d ago

Technology YSK: You can use Google's official Android Studio as a clean emulator for PC

694 Upvotes

Why YSK: Many third-party Android emulators come packed with ads, bloatware, or unnecessary features. Knowing how to use the official Android Emulator gives you a clean, secure, and completely free alternative directly from Google.

Many people use various third-party emulators. But if you just want a pure, official Android environment without any extra software, you can use the official Android Emulator directly from Google via Android Studio.

It is originally meant for developers to test their apps, but anyone can use it. Here is how to set it up:

  1. Download Android Studio from the official site:https://developer.android.com/studio
  2. Install and open the program.
  3. You do not need to create a coding project. Just go to the top menu, click on Tools, and select Device Manager.
  4. Click on Create Virtual Device, pick a phone model, download the Android version you prefer, and hit the play button.

For a smooth experience, you should ideally have 16GB of RAM, an SSD, and hardware virtualization enabled in your BIOS. It works on lower specs too, but it will run noticeably slower.

If anyone has questions or doesn't understand a step, write in the comments and I will try to help out as much as I can.


r/YouShouldKnow • • 3d ago

Technology YSK Chrome enables a feature by default that lets it download AI models to your device without asking. This "small" model can be 4GB!

3.3k Upvotes

Why YSK: 4GB is not a trivial amount of storage space and lots of people don't want Google downloading models to their machine without their consent.

To remove it, you need to go to Chrome -> settings -> AI Innovations. There will be a checkbox at the bottom about "on-device AI" that you can uncheck. Then you need to completely quit Chrome and reopen it.

Edit: This appears to be a desktop only feature. A few redditors mentioned they couldn't see it and I looked into it. Here is Google's official page on it if you are curious, no mention of mobile devices.


r/YouShouldKnow • • 4d ago

Animal & Pets YSK fake spiderweb Halloween decorations are bad for birds

1.9k Upvotes

Fake Spiderwebs: A Hidden Halloween Hazard for Birds

How to have bird friendly Halloween

Why YSK: a lot of people put up fake spiderwebs around Halloween in the US and aren’t aware of how bad they are. Birds have a hard enough time as it is, we don’t need to make it worse

Edit: it’s made of sticky material. Birds get caught and can’t escape. They also build nests with the material and baby birds get caught. That’s basically it. There are better alternatives which people have posted in the comments.


r/YouShouldKnow • • 6d ago

Arts & Entertainment YSK that you can play D&D (5E) for free.

2.5k Upvotes

Why ysk: Because D&D is awesome, but the price of the products can be prohibitively expensive, especially in this economy. But you don’t actually need to buy any of their products to play. Every one of these links are either completely free, or have plenty of free content.

I’ve posted this before, but I found more content.

WotC (Wizards of the Coast) published the game rules at https://media.wizards.com/2018/dnd/downloads/DnD_BasicRules_2018.pdf

There are dice rollers online, like the one at https://rolladie.net/roll-a-d20-die

You can create any type of map you want at https://watabou.itch.io/

https://www.dndbeyond.com is also an incredible resource!

There is also an online tool that allows you to play remotely or in person at https://roll20.net

There is a soundboard with ambient sounds at https://thaumaturgy.app/

There is a cool virtual tabletop at https://www.owlbear.rodeo/

And you can find other games and players at [r/lfg](r/lfg)

There is a ton of content at https://www.dmsguild.com/browse.php?filters=0_0_0_0_0_45462_0_0&src=fid45462 , just search in the free section, or the “pay why you want” section, and say you want to pay $0.00 if you need to.

I’m also including a decent first adventure, designed to introduce key concepts to new players https://www.dmsguild.com/en/product/225910/phandalin-001-return-to-phandalin . There are a ton of supporting products there if you search for “phandalin” on the “pay what you want” section.

You can make your homebrew adventures and campaigns look like a legit module using the tools (on Google Chrome) at https://homebrewery.naturalcrit.com/

There are ALOT of useful tools at https://www.aidedd.org/en/

Mathew Mercer would also be thrilled to teach you how to run a game at https://youtube.com/playlist?list=PL7atuZxmT9570U87GhK_20NcbxM43vkom&si=zmvkxO5Jaktv2az8

There is even a D&D MMO at https://www.ddo.com/home

Feel free to post any other resources you know of, and I’ll add them to the list.


r/YouShouldKnow • • 7d ago

Education YSK Wikihow is paywalled now

2.9k Upvotes

Why YSK: Wikihow is not owned by the same people who own Wikipedia. That is, it’s NOT owned by a nonprofit organization and is in fact run as a for-profit entity. It’s really showing now, since it now requires you to buy a $3.99 per month subscription to read its articles, or at least certain ones.

Try opening this link for instance.


r/YouShouldKnow • • 11d ago

Home & Garden YSK that IKEA provides small spare parts for free.

895 Upvotes

Why YSK: because of specialized screws, dowels, etc. I recently lost a couple of specialized screws for reassembling their daybed. First of all those screws are hard to find but even if you do they cost too much to buy from amazon/ebay. While searching, I found that IKEA actually provides those exact parts. Search using part number. And they deliver it for free as well, at least in the USA.

https://www.ikea.com/us/en/customer-service/spare-parts/


r/YouShouldKnow • • 13d ago

Other YSK The burden of proof lies on the party who makes the claim, not on the party who denies it.

5.3k Upvotes

Why YSK: The burden of proof lies on the party who makes the claim (the person asserting or affirming a fact), not on the party who denies it — captured by the Latin maxim onus probandi incumbit ei qui dicit, non ei qui negat.

This is known as the "burden of proof fallacy". A concerning majority of redditors do not seem to grasp this. Grasping this may lead to more fruitful and productive conversations. Too many instances of an OP making a claim, others refuting, but instead of holding the burden of proof to the original claimant, others ask the one refuting for proof.


r/YouShouldKnow • • 15d ago

Other YSK: Professional only means earning a living doing a particular profession. It gives no indication of competency.

3.9k Upvotes

Why YSK: If you're a young adult just coming into the world, it's especially important for you to know that someone being a "Professional" gives no indication whatsoever of their skill level.

Professional does not mean expert. In fact, it doesn't even imply that they are even somewhat good at their job. All being a professional implies is that they have the minimum skill set to be able to charge money for a job.

I see many young adults let their guard down because the word "Professional" gives a false indication of competency. It's very important that you research and vet anyone providing you a service, even if they're a professional.

Edit: To all the young people seeing the disparaging comments, just remember there is only one group of people who benefit from telling young people NOT to vet and NOT to research before hiring, and that's the same people that this post is about. They start with the letter H and end with the letter K.

HACKS. Any professional worth hiring won't have a problem with you vetting their services.


r/YouShouldKnow • • 13d ago

Education YSK you can easily prove a negative

0 Upvotes

Why YSK: You've probably seen someone in an online argument pull out the classic "you can't prove a negative" line when they're asked to prove that something doesn't exist. It's a common misconception that sounds plausible at first, but falls apart once you examine it more closely.

Imagine I tell you there's an elephant in your kitchen. You go check, find absolutely nothing, and come back to tell me there's no elephant in your kitchen. Have you just performed an impossible feat of logic? Of course not. You checked, found no elephant, and have pretty good reason to conclude that I'm talking nonsense. Now, if I tell you there's an invisible elephant somewhere in the universe that leaves no trace of its existence, that's a different story. But the problem here isn't that you've been asked to prove a negative. It's that I've made my claim practically impossible to test.

And this is where people get confused. Proving that something doesn't exist in a particular place or under specific conditions is often perfectly straightforward. Proving that something doesn't exist anywhere in the entire universe is obviously a much bigger task. Those are two completely different claims. Here's the real kicker, though: just because you can't disprove something doesn't mean there's any reason to believe it.

I could tell you that there's a tiny, invisible goblin living inside your fridge, and that it teleports away whenever you open the door. You can't prove me wrong, can you? But I suspect you're not about to start leaving offerings next to the milk. The point is, you don't have to disprove every ridiculous claim someone throws at you. Sometimes the person making the claim needs to give you a reason to believe it, rather than expecting you to spend the rest of your life trying to prove them wrong.

So no, you can't always prove a negative. But you absolutely can prove plenty of them.


r/YouShouldKnow • • 17d ago

Technology YSK: You can skip long intros and outros in songs on Apple Music without editing the actual song.

793 Upvotes

This has been driving me crazy for years, and I finally figured out how to fix it, so I figured I'd share in case anyone else finds it useful.

You know how some songs have really long intros, maybe a bunch of silence, someone talking, or some other nonsense before the actual music starts? Or maybe there's a long outro you don't want to sit through every time the song comes up in a playlist?

Turns out you can skip all that in Apple Music without actually editing the song.

Just right-click the song in Apple Music on your computer, select Get Info, and go to the Options tab. There are fields for Start and Stop times. Just set those to where you want the song to start and end, and you're done. This will sync across your devices.

Maybe this is common knowledge, but I had no idea it was an option. Wish I'd figured it out years ago.

Why YSK: If you listen to a lot of music on shuffle or have large playlists, this lets you cut out unwanted intros, outros, and stretches of silence automatically. You don't have to manually skip ahead every time a song plays, and you don't have to modify the original audio file.


r/YouShouldKnow • • 19d ago

Finance YSK: You can use FreeTaxUSA to file even complicated (personal and business) federal tax returns. It walks you though the process just like TurboTax, but it is free

6.4k Upvotes

Why YSK: I was juuuust about to buy TurboTax like I have for the past several years. I had heard about free sites, but I never checked them out myself. I have personal and business taxes to file, so I figured the free sites were for people who just had simple returns. I decided to check it out before dropping $130 for another edition of TurboTax. The site I found walks you through each step just like I'm used to. It saves your progress and then lets you e-file right from the system. If you are rushing to prepare your taxes before the October deadline, try out one of the free sites to see what they offer before you drop money on TT.


r/YouShouldKnow • • 18d ago

Technology YSK your YouTube Liked videos playlist only ever shows your newest 5,000 likes. You can't scroll past that, but the older ones are still in your Google activity

1.7k Upvotes

Why YSK: lots of people use the like button as a bookmark. The Liked videos playlist only ever lists your newest 5,000. You can't scroll past that, there's no warning, and the older videos still show the thumbs up lit. If you've been saving stuff that way for years, your early saves probably aren't in the list anymore and you'd never know.

They're not gone. Go to myactivity.google.com, then Other activity, then YouTube likes and dislikes. Your likes are listed there by the day you liked them, including the ones the playlist no longer lists.

Quick way to tell if it's happened to you: scroll to the very bottom of Liked videos and look at the oldest one. If it's way newer than it should be, that's this.


r/YouShouldKnow • • 19d ago

Food & Drink YSK: When honey turns yellow and solid like a paste, you can restore it

1.7k Upvotes

Why YSK: The honey is just fine and not spoiled. Just submerge the honey container in a pot of hot water for a few minutes. It will return to its natural liquid state like when you first got it. FYI, honey never spoils and is in fact an effective anti-bacterial agent that can be applied to skin injuries like cuts and scrapes.

Edit: my bad. Not boiling water, just nice and hot to reconstitute the liquid amber state of the honey.


r/YouShouldKnow • • 19d ago

Health & Sciences YSK about the Negative Flynn Effect

5.0k Upvotes

The Flynn Effect is an observation by James R. Flynn, who noticed that average IQ has risen with every generation since WWII (i.e. each generation is subsequently smarter than the generation before).

The Negative Flynn Effect is the observed decline or eventual reversal of this effect, for generations born after 2000.

Why YSK: It suggests that cognitive performance is not fixed/strictly genetic and can decline when our environment changes. Understanding what is driving that decline could reveal important problems in education, health, technology use, or other parts of modern life. This can help us identify ways to better support cognitive development in future generations.

https://www.sciencedirect.com/science/article/abs/pii/S0160289616300198?


r/YouShouldKnow • • 19d ago

Technology YSK your LG TV is spying on you in your own home

7.4k Upvotes

Why YSK: You deserve to know. LG has been busted for having built in microphones that record you in your own home and harvest your data.

Source: https://youtu.be/6IFVTcM28KA

Edit: I originally thought the video said there was a webcam in the beginning but it looks like they were just testing the audio with their own webcam. The microphone is for sure in the tv, but I’m not sure about the webcam! Sorry if I caused any confusion.


r/YouShouldKnow • • 21d ago

Technology YSK about deceptive.design that lists and educates you about tricks and scummy tactics used by even the most commonly used websites. They make you do things you didn't mean to do

3.0k Upvotes

Why YSK: Dark Patterns are quite prevalent in even the most regularly used websites. How many times have you logged onto a website with an intent to do A but the site tries to lead you to B instead? How many times have you had those "I didn't opt for this" moments during online shopping? This website will help you understand such tricks and be more informed against them.

Note: I'm in no way associated with the website. Just helping spread some good information.

Edit: The site darkpatterns,org is now defunct and has moved to deceptive.design


r/YouShouldKnow • • 21d ago

Animal & Pets YSK you can grow trays or pots of young cereal grasses, often called “cat grass”, for your cats to nibble on, which may help them pass hairballs.

1.3k Upvotes

Why YSK: many carnivorous species also ingest plants for various reasons. Domestic cats are believed to consume grasses primarily for their fiber content. In this regard, cat grass supplants nibbling on houseplants or lawn grasses

https://en.wikipedia.org/wiki/Cat_grass

edit: yes, it does mean your cat will throw up more often. But cats need to pass hairballs, one way or another (^^), if they don't - it may develop into a hairball obstruction, which means a massive vet bill and/or even death. Getting rid of it by throwing it up (rather than go all the way to the rear) is much safer, the deeper the ball gets, the higher the risk of an obstruction gets.


r/YouShouldKnow • • 22d ago

Animal & Pets YSK Minoxidil is extremely toxic to pets

3.1k Upvotes

Why YSK; even a small residual amount on your finger tips can be fatal for them


r/YouShouldKnow • • 24d ago

Technology YSK: Putting a black box over something in a PDF doesn't necessarily hide it. People can sometimes copy and paste whatever you covered up.

2.9k Upvotes

Why YSK: If you've ever covered your address, account number, or other personal information with a black rectangle before sending someone a PDF, you might want to know this.

Depending on how you edited it, you may have just placed a black box over the original text without actually deleting anything.

In some PDFs, someone can literally highlight the blacked out section, copy it, and paste it somewhere else to see what you were trying to hide.

If you're sending anything with sensitive information, use an actual PDF redaction tool that removes the underlying content. Don't just draw over it.

And if you want to check whether something was properly redacted, try copying the covered area yourself before sending it.

Adobe explains how to properly redact and remove hidden information here:

https://helpx.adobe.com/acrobat/desktop/protect-documents/redact-pdfs/redacting-sanitizing.html


r/YouShouldKnow • • 22d ago

Automotive YSK Way around broken car key fob

0 Upvotes

Why YSK: how to save over $100.00 to replace. The part that's pressed to open the car broke off, so there's a hole showing what gets pressed inside, probably with a spring on top that is no longer there. I use an eyeline pencil with the top on to press the inside & car door opens.

This approach will work on any button using anything that fits in the hole.


r/YouShouldKnow • • 25d ago

Finance YSK paying for all of an insurance policy's premiums upfront can make it around $5-10 cheaper per month

422 Upvotes

Why YSK: Not life-changing but it can save you a little bit of money.

Insurance companies charge more if they bill you monthly compared to if you pay for the entire duration of the policy upfront in one go. Sometimes, the difference is nominal or nothing, but other times, it's actually significant. So if this is something you can afford to do, you should check if a discount is offered, and if it is, take it.

This doesn't affect your cancellation rights. If you cancel an insurance policy despite having paid for it in full, the insurer will mail you a prorated refund.

This tip works in the US with several major insurers.