When the Blind Still See

[@iammrbeat]

This video really opened my eyes.

[@tpespos]

I see what you did there.

[@ThatCrazyMexicanBoii]

tpespos i CANT see what he did there . Im blind

[@nein9382]

Congrats for 200 likes!

[@plzineedtogowayrn6353]

This is funny

[@mackycabangon8945]

Mr. Beat *ba dum tss*

[@Dan99]

Is that an exurb1a cameo I hear?

[@nayandusoruth2468]

So exurb1a is knowing better's ferret. Good to know...

[@jupiter2448]

Oh yeah wasn’t that the guy who raped his girlfriend?

[@pimfreeke5971]

@@jupiter2448 after reading all her qoute on qoute evidence on her blog. no, he just has some weird friends and has some weird kind of humour.

[@tylersantiago8165]

I was about to type that

[@andrestomas2366]

Jupiter I am going to need proof of that .

[@hashbrownz1999]

"would you like to try again?" *dead*

[@timsullivan4566]

Probably Not A Chicken - yours gets my vote for Best User Name Of The Year. See you at the awards dinner!

[@Arikian]

@@timsullivan4566 Oh gee golly Winner Winner Chicken Dinner

[@timsullivan4566]

@@Arikian I was quite distressed to see your post. I've no idea HOW you managed to access our winners list for the 2019 awards, but I can only beg you - PLEASE delete your post before it goes viral! In return, I'll offer you a selection of user names - each derived from scrambling the letters in "Arikian" - (such as "K.I.A. - Iran", "Aria ink", "I rank A.I.", "Rainiak" and "Ira - a kin," to name a few). Just delete that spoiler post and you're free to adopt any of these user names to be eligible next year in the "Best Anagram Re-branding" category. Thank you.

[@abandonedchannel72929]

YOU ARE A CHICKEN! FAKE NEWS! REEEEEEE!

[@anubis9139]

What helped me understand the question of "What color do people with total blindness see" is to think about what color do you see when looking at something that is behind you. You don't see black behind you, you simply see nothing.

[@Spectral-Spiff]

I dont think of it as blind people see nothing but instead i think of it as blind people just dont see

[@Xingchen_Yan]

same as try to image a color you never seen

[@RockstarRacc00n]

One of the things I like about this is you're talking about neurological stuff. As someone who suffers from PTSD, I'm constantly having to explain to people that the brain doesn't work in the way they think it does, because there are things I have difficulty with which seem straightfoward to other people, despite having a huge set of skills that one would expect to require those abilities. I often hear arguments about not having the willpower or "faking it", because the popular mythos around the brain trumps the actual science behind it in most people's minds.

[@completioncomplex8026]

So watching this video as a legally blind person (if you’re curious, I have nystagmus, which is like the thing where he shifted his eyes about from side to side. Not exactly the same, but has the same effect.) you actually cover these topics pretty well. Whenever I say I’m blind, people look at me funny. Because I can still see, but it’s to such a minute degree that it’s considered blindness. Very fun, very informative video :)

[@user-bz3kd2mt3u]

Whatting this video?

[@thespinningchickennugget7871]

Just curious, what did you mean by where he moves his eyes about? Is it the being unable to focus thing?

[@completioncomplex8026]

@@thespinningchickennugget7871 Look up nystagmus. Your eye does this really weird flickering thing where it... not vibrates but it looks like vibrating, and sometimes they dart around wildly. I don't really have issues focusing because you don't really perceive it, or at least I don't.

[@wyliehelms9263]

Am I the only one who didn't flinch? Surely not

[@stewartzayat7526]

He isnt particularly threatening

[@MickShoemaker17]

No, you're not

[@tobybartels8426]

No, but I'm watching on a handheld phone, and maybe it's different on a bigger screen?

[@ferael0013]

I didnt even register that he punched towards the screen xD

[@jannikheidemann3805]

The jumpscare memes rarely even get me these days.

[@joshuacoppersmith]

Another blindness is stereoblindness, that's mine. It comes from muscles not being able to align the eyes...so it is originally a very "physical" thing. But since it is there from birth the brain develops to compensate. Often one eye goes neurologically blind to reject the doubling image from the non-dominant eye. That's why doctors patch eyes alternately for children with this, to keep both eyes going as the brain develops. That's good, but it means double vision for the rest of life. Really, it has some cool side effects, but no depth perception means baseball was no fun. Also, one eye will wonder which makes a person self-conscious. Even MORE TO THE POINT, once for a moment a doctor put an image-shifting prism in front of one eye when I was in my 20s, and I saw depth for a moment...my brain has the machinery, but just can't use it.

[@CloverChoco]

Interesting. That's amazing in its own ways. Thank you for sharing

[@ChaoticNeutralMatt]

Huh. Fascinating.

[@soulmechanics7946]

Thank you.

[@aazhie]

My sister has this, I think? She can still make her eyes move independently like a chameleon and it creeps out mom out xD

[@Volteer]

Maybe for the "Do you see black" question it would be good to also ask a person who wasn't born blind but completely lost their ability to see later in life.

[@aazhie]

It might not be accurate at all. People who are deprived of things when their brain already is used to the sensation may not be able to accurately describe what they are actually sensing. In the same way that amputees who lived WITH a limb for years, then lost it, have phantom limber sensations because their brain developed a body map including that lost limb. Babies born without a limb don't usually experience anything where their "missing" part should have been, because they never experience life WITH that particular part.

[@ceeber]

I was temporarily blind in one eye and am low vision and I saw what I understood to be gray

[@Т1000-м1и]

Based on what I've heard, a lot of these people see random funky colors if they actively try to comprehend it and don't mind it while doing something else

[@anidnmeno]

i lost half the vision in mly left eye due to a stroke, and can confirm, it's not black over there... there's just... nothing there... it's weird, but...

[@Cyrenetes]

If you were born deaf, do you think you'd need a person who lost their hearing later in life to tell you what nothing sounds like?

[@mantha6912]

Your videos are really well done! Truly educational unlike other channels that "teach you things" but ultimately end up throwing fun facts at you. And, your humor is original and not predictable or obnoxious like more mainstream channels. Your channel deserves much more attention!

[@mousermind]

Woah. I never consciously realized I don't see ANYTHING when I close one eye. Incredible. Also, amazing work on that ferret-vision camera work!

[@nicstroud]

Your ferret is _so_ British. 'Knobend' is such a British insult.

[@suwinkhamchaiwong8382]

Nic Stroud The voice is exurb1a. A Brit in Bulgaria.

[@nicstroud]

Makes even more sense. :-)

[@ye6942]

So that's why shit is slow when I'm blasted

[@mrobsolete530x4]

That made me laugh out loud

[@chrismofer]

i'm glad u lerned today

[@hollowbullet]

Got some light weights in our midst ;P

[@ye6942]

hollowbullet vaporizers are a hell of a thing

[@hollowbullet]

Haha touche my bro keep vaping and keep getting blasted!

[@Sahentry]

I have Retinitus Pigmentosa, it's pretty wacky in that you lose your night vision, then your peripheral vision (bye bye driving) until you work your way to tunnel vision. There is a reverse of this condition called Stargardt's disease where you lose your central vision first. Having said all that, people think I'm weird and probably hate the way I cut them off or bump into them (sometimes it's just them being rude). I find It funny now that I was really affected by how people perceived me before this all happened, and now I feel a lot more comfortable with people not understanding my struggle in this life, and if it inconveniences them in public. Not that i'm not sympathetic to what may seem like a sleight, when in fact I'm just trying to get home in a timely manner because things take me longer in general, that's my reality and it's quite terrifying. Combined with a hearing problem, I have ushers and I'm currently working with researchers in the field to see if I can blame some French Acadians in the family tree. Loving the show in the meantime!!!!

[@aarosundvall]

You are fucked

[@skepticmoderate5790]

That sucks mate. I hope you find a technology that treats these conditions in the future.

[@FraktalPriest]

If and when you loose sight, look inwards for the light.

[@smedjamesful]

Hey - first ever youtube comment by me (I think!) - I have ushers type 2, and my father has stargardt's disease, so despite the genome project thingy in my country saying there's no genetic link... I kinda think there surely must be? A bit peeved that this video didn't cover the nightblindness/tunnel vision side of things. I totally get what you are saying as the general public has no concept of it, and it's frustrating how it's progressed over time - but do you not have a white stick yet? I mean, it's helped me try to be 'normal' a bit more (I mean, there's a shit load of depressing stuff associated...). I don't know what I'm trying to say - but please feel free to msg me as I'd love to talk with similar people who ACTUALLY understand!

[@Qball42]

Yeah, the vast majority of people have little to no understanding of the fact that the majority of visually impaired people fall on a spectrum between total blindness and 20/20. I try to educate as many people as I can about that. I, myself, am an extremist; I am total. Just remember, you're in a place where you can embrace blind things when you want to and sighted things when you want to. There's nothing wrong with using a white cane one moment and playing very visual video games the next.

[@garrett5328]

I still can’t tell a difference in the closed eye and covered one

[@craigbenz4835]

I couldn't either.

[@SilverMe2004]

try slowly opening/moving your hand

[@b.n.6313]

Death Incarnate well it doesnt work for me either bc my glasses are in the way... maybe he has the same issue

[@kllaterall]

Death Incarnate no need to be a bitch about it

[@bennemann]

I notice an increase of my visual field towards the edges. It's not too dramatic, but there is definitely a noticeable difference.

[@scadinaut]

This channel is criminally appreciated. The video is informative, funny, fairly long but still engaging enough to entertain my squirrel-like attention span. Instant sub!

[@KnowingBetter]

+Scadinaut I'm assuming you meant "criminally *under appreciated" ;)

[@KC-zz2ih]

@@KnowingBetter no, I think he meant exactly what he said.

[@guyinagame4793]

@@KC-zz2ih god damn bro

[@floydlooney6837]

Ataxia is what affects Stormtroopers. You there, stop... fires blaster off to the side... "dang!"

[@tamerlane9889]

Why is the blind person wearing glasses?

[@BigJack-1872]

Tamerlane to see better

[@seraphina985]

Probably because sighted people tend to find it disconcerting looking at eyes that appear unfocused or sometimes even move seemingly randomly since it triggers the uncanny valley effect. In that sense it's no different to any of us we all dress ourselves up in accessories and even shape our behaviour to make others feel more comfortable around us and shape their perceptions of us in a positive light.

[@tamerlane9889]

Yeah but there not sunglasses you can see trough them.

[@rocksandoil2241]

For safety, and some are "blind" but see something. Very near sighted.

[@FraktalPriest]

To get to the other side?? ;D

[@LaverniusTucker2410]

Hello, Space Turtle God (exurb1a) army here. Very informative video! *Subbed*

[@serglian8558]

I thought that said Sburb1a

[@element1192]

I kind of had face blindness for the longest time when I was a kid, to the point where I couldn’t identify my friends when I saw them in public. Come to think of it, I had quite a few problems when I was younger.

[@DABATTLESUIT]

You should submit your videos to Tom Scott. He'd totally pick you to feature you

[@sunsetvlogs5500]

James Cook definitely

[@sunsetvlogs5500]

James Cook also how would you submit it to him

[@brocktherockme]

I used to be blind! This was so cool to see because I experienced a lot of these bizarre things.

[@ookami5329]

wow really? what was it like to gain sight?

[@brocktherockme]

@@ookami5329 I lost my sight after an overdose at the hospital. At first everything was dark followed by a few days of seeing shadows and shapes and finally after about 10 days or so I could see again.

[@JJJRRRJJJ]

Oh god - hearing him mention the Lateral Geniculate Nucleus brought me straight back to sophomore year college Biopsychology. This was hands down one of my favorite classes ever, but the memorization of dozens of complicated neural pathways was not easy. I learned a lot though! (Shoutout to Prof Michelle Wirth!)

[@bggibbons]

I went blind for about 3 hours, once several years ago. It was weird, because I saw my vision go to monochrome only then that faded out too. I was washing my hand in front of my face and watched it disappear. The room went totally black, the blackest I have ever "seen". It was so scary. After about 2 hours of absolutely no vision, slowly it started to reverse, first monochrome then colour.

[@aazhie]

"The Man Who Mistook His Wife for a Hat" by Oliver Sacks discusses this kind of phenomenablowing series of short stories about him working with patients who were dealing with disorders along these lines. I took a psychology class on Processing and Perception. We learned ALL the most mind blowing stuff where people will know an answer unconsciously, or have some difficulty with the processing of a sense, or how a sense can be absolutely removed.

[@IDreamOfLogic]

I immediately thought of that book when he mentioned visual neglect. I was mindblown when I read about that patient of his. Amazing book. And very moving.

[@kpk1and2]

10:56 I've been coming back to this video for the ferret part

[@brianjaeger9565]

I have a hemianopsia, which is very similar to the visual neglect phenomenon you described. Very few people without such a deficit can comprehend how profoundly it impacts everyday activity. Stoke patients tend to experience this, so I relate well to geriatrics, but not the young and healthy

[@Swoopert]

As a special educator, it is nice to see an informational video that breaks down cortical blindness in more general language for the uninitiated. I have worked two or three students with cortical blindness and it is hard to explain to other teachers and students.

[@daisybrain9423]

But blind people who could once see should be able to describe it, right?

[@ChaplainDMK]

Its literally nothing. Its hard for us to understand because sight is our primary form of perception, but imagine if you hear nothing - there is not something, its nothing. Black is perception, its something. Think of a non amoled display, even black means that the backlight is showing, so there is "something", amoled means the backlight is turned off so its truly "nothing" there.

[@daisybrain9423]

Thank you for your answer :)

[@benjaminlehman3221]

Žiga Auer I think he means people who lose sight after birth. They now see nothing but they did see things before.

[@TheMrVengeance]

+Ziga Auer - _"amoled means the backlight is turned off so its truly "nothing" there"_ Yes and when it's turned of and not displaying, it's black. So that's not really helping your argument.

[@TheMrVengeance]

Max - I know. The parts that aren't lit though are still black! I just said that.

[@hamedhosseinian5209]

I now know and fully understand what a blind person feel like it's like once we had a vision through the back of our heads and now it's disappeared, all blind people see nothing, not even a black screen like what we see when we close our both eyes Thanks to this video

[@thursdaythought7201]

I am still having trouble dealing with the fact that one of your eyes turns off when you wink

[@kgdaemperor7159]

They don't. Your focus shifts to objects. Leave the eye open and cover it while using the other. Ssme thing happens

[@Posty-vw9jc]

this whole "your brain just shuts off all incoming information from that eye" thing is complete fucking bullshit. he even says, "here try it." alright man I'll fucking try it then. lets shut off all light in my room, done. next, get my phone, turn that fucker's light all the way up. done, (eys are closed all while doing this, turning the light on from memory). as soon as I turn that light on in my blacked-out dark room and point that fucker at my face all I see is the light penetrating my eyelids and a very distinct fleshy color like shining a light through your hand. now how the fuck am I still seeing a bright fucking light in my eyes through my closed eyelids if my brain is shutting off "all" the info from my eye(s)? fucking riddle me that Mr. Knowing better

[@ryan.sullivan2002]

I felt like I got hit by a train when I heard exurb1a. I was on my semi annual exurb1a binge last week and now I started binging knowing better and I felt like I fell into a parallel dimension.

[@knewledge8626]

I'm 60 years old and I think some of these conditions start to develop as you begin to age.

[@royyark2896]

i am 73. over time i have lost hearing in my left ear and only partial hearing in my right. i also only have 6/20 vision

[@CaesinSylviir]

Dude you are seriously undersubbed. I'm so glad I stumbled across your beautiful and well articulated videos.

[@Skitzotech]

I have Keratoconus my left eye sees a circular explosion of 20+ overlapping images ... thats in the day ... at night every source of light looks like a giant halo with 20+ perceived sources in the middle. My right eye is quickly degenerating and catching up to my left eyes progression. Im 32 and had 20/20 up until i was 28 then BOOM one morning i wake up and i cant see distance anymore and it progressively gets worse. My left eye is over 20/100 and my right is currently 20/60. Im pretty scared and depressed knowing that since it got this bad in 4 years lets me know that in maybe 2 more years my eyes will be totally useless.

[@systemsandhowtodestroythem474]

How are things going?

[@EvolverGT]

2 years now from your comment, hope you are good pal

[@Skitzotech]

@@EvolverGT Holy crap ... youtube never sent me any of these notifications... till this last one. So updates... mid 2019 i managed to scrape enough money to have crosslinking done on one eye. Since my left eye was at a point where it was literally useless I decided to do the procedure on my right eye... Trying to preserve what little sight it has left. The progression in the right has seemed to slow it still gets worse ... but before the procedure I could see daily progression but since the procedure i only see noticeable worsening maybe once every month or 2... Since then I can no longer drive... I have trouble even recognizing faces... on multiple occasions i have mistaken individuals for others... I cant work... My government refuses to put me on disability because I need to go to a government sanctioned doctor for 2 years before they will hear my case... Case ... I cant drive... i can barely see enough to walk but they expect me to once a month make my way to a "specific" doctor that is over 50 miles away...for 2 years... So basically i sit on a chair infront of a computer all day... and wait till its time to fall asleep again...

[@wrybreadspread]

My father, may he rest in peace, had visual release hallucinations, aka Charles Bonnet syndrome. People with diminished vision due to macular degeneration, like he had, or other causes, will experience hallucinations. Things you're looking at appear to liquefy and distort in shape. Animals and little people also appear The brain supplies visual data in place of actual nerve impulses that the eye will no longer send. It's sort of the visual equivalent of phantom limb pain. Am given to understand that the hallucinations can be quite unnerving.

[@tipperary4525]

Me da, e's up the ra now, was a faking mad blindo. Somhin wrong with his head. Any other crazy bastards like 'im or other crazy bastards go around seein shite. his faking sight would turn to guiness and go all sorts of faking mad. He'd say he could see the wee cunt Jerry down the block and his pig of a ma.

[@floydlooney6837]

That would be worth a video!

[@seanp1315]

Showing your video to my son, don't know how I never realized the ferret is exurb1a. Brilliant

[@baseballlover312]

I'd be interested to learn more about what cause more common vision problems and how things like glasses correct them. I just have a bad version of normal vision, so nothing like you described here. My eyes are really bad without my glasses, to the point where I could barely function, but when people ask they almost always think that my vision is just really blurry, when blurry is not really the way I would describe it. I don't know, it's kind of weird.

[@bryede]

Blindsight is fascinating. It shows how our visual field is actually 2 layers: The conscious perception of color and shape, and a subconscious system of object outlines and labels that describe what we're seeing. Without that 2nd layer, everything is Picasso on acid and it could take a very long time to deduce what any particular object might be. It would be cool to be able to visualize exactly what information is in the 2nd layer.

[@braindead5599]

Hire Wheatley out for voiceover work.

[@Contra1828]

5:00 - AKA soft focus, where you pay attention to something in your visual field without actually moving your eyes. Very useful for looking at someone without making it obvious.

[@alyssarouso]

I'd love if you talked about Migraines and Migraine Auras!!

[@GglSux]

Tommy Edison "really rocks", it never fails to lift my spirits to see some of his videos...!!

[@JadeyCatgirl99]

4:31 Matthew Murdock is blind, the actor, Ben Affleck's eyes are perfectly intact

[@OleighanderGrace]

As always, a wonderful, informative video. As a blind woman (auto immune optic neuropathy), I find it easier to just explain to people that I am blind, as opposed to legally blind, because they ask all the questions about what I can see and how I’m able to function in every day life.

[@Altorin]

The form of blindness that is the most existentially terrifying is the blindness you realize we are all experiencing when you learn that mantis shrimp have 16 different types of retinal cones. We're all blind!!

[@KnowingBetter]

You should check out my next video in the series on tetrachromats. Mantis shrimp vision is awful.

[@jayteegamble]

Because they have less complex brains to compile the info from their cones, yes?

[@canhedotricks6078]

jayteegamble no

[@camperpro482]

@altorin cool story bro

[@markdavison293]

thank you for making this video from a stroke survivor who lost the left field of vision in both eyes, less vision on my left eye than right. total loss of 75%. doctors said it is rare and my case was published in 3 medical journals.

[@Amuzic]

It's been 2 weeks i am watching your channel. Its the only channel that I have ever subscribed to after only watching one episode. And I am happy that my judgement was right. I like well researched contents and digging deep to find psychological and other existential and sometimes mundane and trivial things. I like weird sense of humor particularly dark type. These videos have it all.

[@treyphillips9191]

This guy is basically low-production Vsauce. But that's not a bad thing. I love it! Just straight, informative content. Glad I found a new channel to binge

[@mLswanson]

I’ve been blind in my left eye for as long as I can remember so I’m always curious about what binocular vision is like... I also have severely reduced visual field in my “good” eye. I have a hard time locating things when people just point to them. I’m also bad at recognizing people at a distance.

[@lanabanana8265]

I always thought blindess via Conversion Disorder would be the worst-- psychological trigger, suddenly you can't see. Or more accurately suddenly while your body still responds to stimuli, you can't consciously see stuff.

[@72Yonatan]

What a tremendous amount of information here. Thank you for your efforts.

[@graymccanse6769]

I just realized that I'm cortically blind when I'm asleep. Essentially, I have aphantasia (lack of the mind's eye/visualization), and I can't actually "see" in dreams but I know exactly what's around me and I know a lot of visual details. What I see is still complete blank/emptiness, not a color or a 'dark screen' or anything, I just see nothing at all. But I still know what's happening visually in the dream.

[@TheKayleighmerrygold]

Hey nice hair! You must have some pretty cool friends to help you with that ;) Great video!

[@leariesenman4174]

I got so light headed once I became cortically blind because i was walking towards something and i stoped right before it and was able to "see" without seeing it. It only lasted for a few seconds

[@jdmj707]

I wish tommy Edison was still making content 😔

[@binaryglitch64]

Been skipping around randomly on your vids (as I do) but so far outta idk 50 or so, I think this is my favorite so far. Probably cuz I learned the most from it.

[@mmcgrath2510]

1:54 I keep trying over and over with both eyes and it looks exactly same

[@Horm999]

I just stumbled across your videos and they are both very informative and entertaining. I actually subscribed, which I rarely ever do. It’s probably been well over a year and I’m on KZbin almost daily! Keep up the great content!

[@lunawolfsong1799]

I tried several times with the one eye covered sentence experiment. I saw no difference. What is supposed to happen? For those who see a difference, what was the difference? Also - when I close one eye and/or cover it (covering it makes no difference), I don't see 'nothing', I see exactly the same sort of input as I see when I close both eyes, it's just as though it's more peripheral. It's harder to see it when one eye is open, but if I pay attention it's definitely there.

[@thegrayghost1786]

When I close only one eye I literally see nothing out of that eye. Not black, just straight up nothing. But when I use my hand to cover my eye I see black out of that eye.

[@hamedhosseinian5209]

Same, also when you only cover one of your eyes with hand not by winking your brain tries to stimulate the vision of the coverd eye like it's still open and seeing, to me it may imply that you're brain probably detects the position of your eye lid and determines your binocular vision through the position of them

[@australium7374]

2 years late but essentially your eye abandons trying to collect information from the eye you see nothing as a result and your field of view is decreased to only 1 eye

[@thetooginator153]

Knowing Better - I like how your ferret has a cool British accent! You have a great talent for making it fun for your audience to stay engaged while still keeping things on track. Here’s something to ponder: think of all of your life events and relatively recent technological developments (high-speed Internet, affordable video recorders, etc.) that led you to creating your fantastic channel. I bet your parents encouraged learning and critical thinking - and that was just the beginning.

[@deusexaethera]

This video makes me wonder if my brain processes visual input abnormally. When I close one eye, I see the exact same thing I see when I cover one open eye with my hand -- I see the image from one eye superimposed on top of a uniform black background.

[@andreaannunziata8268]

Shawn Elliott it happens with my left eye, not with the right one. Weird.

[@LCAGD]

Hearing exurb1a narrate your ferret was just as mind blowing as this video's content. His books are incredible.

[@misschief4283]

Nothing changes for me at 1:49 and it doesn't matter which eye I do it with! What is supposed to change?

[@AeroPiggy]

Sarah Thomas Idk it didn’t work for me either.

[@SFnader]

The angle from where you are looking at the text

[@misschief4283]

SFnader I don't think you understood that experiment. He said there should be a difference between your eye being closed and open when it is covered by your hand. As in you should be able to see something when it's open that you can't see when it's closed but with your hand presumable blocking all the light out, it's looks identical when I do this, with either eye.

[@misschief4283]

No, that is not the point of the exercise... he has used this exercise in another video before, he seems to be suggesting that your eye being closed and seeing nothing and your eye being open and seeing nothing/darkness is different, why put your hand over your eye otherwise if not to stop you seeing when you open the eye.

[@5thcrusader424]

Your sexuality

[@grigordyankov]

How can you not love his videos. I simply adore this guy!

[@charliespurr7325]

Am I the only one who sees the dress as neither blue+black or white+gold? I see it as blue and gold.

[@sideshowkazstuff3867]

Charlie Spurr I’ve seen the dress. They had one at the charity shop near me. The black really was a sort of grey brown almost black. I can see why you could see it as blue and gold.

[@tobybartels8426]

Thank you, someone else who can see colours correctly!

[@lizliu6564]

you really have explained lots of concepts in my sensation and perception course! thank u!!

[@Krokoklemmee]

9:20 is he talking about Ketamin?

[@Ratchet4647]

When I realized Wheatley's inner voice was exurb1a all I could do was laugh uncontrollably from shear glee. God I love that channel.

[@aether222]

Was looking for this comment. But wait, wasn't he a depressed turtle not a ferret?

[@greghawkins1025]

Although I'm really a 71 year old American man, my hobby used to be pretending to be a 16 year old, blind British girl. It was tremendously thrilling. I learned to read & write in Braille & use a cane. I could go from the basement to the attic in total darkness with pinpoint accuracy. My interests have changed in the past 3 years however, & now I pretend to be a sighted, 16 year old Japanese high school girl. I've dyed my brown hair black, & super glue the corners of my eye shut for that cute slant eyed look. The pitch of my voice is high enough to scratch glass & I'm studying the Japanese language. I really enjoy being a girly, girlish girl.

[@battyboo3732]

Greg Hawkins excuse me what the fuck

[@jonathan.t.]

excuse me what the fuck

[@quinnheller1113]

9:57 I got really light headed last week and my cones stopped working because my brain didn’t think they were necessary and that’s almost exactly what I saw

[@articvengeance]

gg I got a glasses ad

[@theKRB93]

Why did I watch this and absorb the terrifying eyesight examples right before bed

[@lizzyfrizzle8986]

God himself has blessed this video in ferret form

[@peebay3515]

You didn't give me a headache...the hangover from drinking too much did that!

[@OmgTurtlezWasHere]

I just thought of a way to describe what blind people see. What color does behind you look like.

[@snorf525]

or when you sleep

[@mLswanson]

I’ve been completely blind in one eye since birth, and my remaining functional I has extremely reduced Paris Friel vision due to glaucoma and several other conditions that prevent me from having good site in my good eye. But I’ve always terrified that I will lose the remaining sight in my right eye and not be able to see anything again.

[@erictaylor5462]

Have you ever met someone and even though they do nothing overtly threatening, they still make you feel creeped out? This is because you get a lot more information from your senses than you are swear of. That feeling is your brain telling you "Hey we've got a threat here, red alert, shields up!" *PAY ATTENTION TO IT*

[@EebstertheGreat]

It could just as easily be that they recently walked through a garden and the smell reminds you of a bad experience with a bee or something. Just because you have a bad vibe doesn't mean the person is actually dangerous.

[@erictaylor5462]

True, but often it does. It goes back to the old, "It's better to mistake a bush for a lion than to mistake a lion for a bush. In the fist case you are scared for no reason. In the second, you became cat food. You can survive being scared for no reason. It's much harder to recover from a lion attack. If you write off that bad vibe as being over careful and the person is dangerous, they will probably hurt you. If you keep your guard up and the person is not dangerous you might hurt their feelings. Which of these is preferable do you think?

[@EebstertheGreat]

Even dangerous people won't hurt you most of the time. But more importantly, you are greatly underestimating the cost of avoiding everyone who makes you feel briefly uncomfortable. People are not lions and they are not out to get you, but you'll never learn this if you hide from everyone who looks scary.

[@erictaylor5462]

EebstertheGreat, Is there something wrong with you? Are you one of those people who make others feel hinky? I am not talking about hiding form anyone, and my mention of lions is simply an analogy. All I'm doing is saying don't let your guard down when you have this feeling. It is telling you something you may not otherwise be aware of. Also, I'm not talking about people who look scary. People who look scary give you a sense of danger that you are consciously aware of. I am talking about people that do not do or say anything threatening, but you nevertheless feel uneasy. And even though it's true, dangerous people won't hurt you most of the time, they are more likely to hurt you. I know a guy who was a Navy seal. I consider him very dangerous, but he is quite nice and a loyal friend. So long as you don't present a threat to his family. He had this thing he went through with his daughter where he would read to her then check her room for monsters. He never expected to actually find one, but one night he was surprised to find a man hiding in her closet. Frankly I'm surprised there was anything left of the man (who was responsible for several rapes pf children) for the police to arrest. He told me later that he would be held to a higher standard because of his military training, but he know just how much force to use to prevent the guy from getting away. So in this case, even though my friend was very dangerous, he was easier on a pedophile he'd found in his house than I think most other fathers would have been.

[@EebstertheGreat]

Not sure how that story is relevant. The problem with trusting your gut when dealing with other people is that your gut is usually wrong, and it is always heavily biased. You are always going to feel uncomfortable around people very different from yourself. Obviously your gut is going to make a lot of decisions for you anyway, but that doesn't mean it is good advice to try to trust it even more.

[@PockASqueeno]

It makes me so happy that you watch Tommy Edison’s videos! He’s the best!

[@nabicx]

boo you told me not to do drugs

[@earlycuyler2295]

I work with a guy who went blind after looking at the beam of a laser used to cut steel. He described his vision(with 100% destroyed retinas)as a dull shallow gray.He said when the accident first happened it went to deep dark brown and as his eyes healed all that returned was he calls like a dog you can't see when it's close but you can't see through it. He said rarely he can detect shadows passing but it's extremely rare and scares him.

[@reidwallace4258]

What drug has been known to cause that? I have smoked pounds of the thing currently being legalized and have never heard of that as a symptom? I could see this coming from salvia or maybe mushrooms, certainly acid, but where are the reports of this resulting from weed? Not that I don't believe it, I'm just the rare stoner that likes to know the negative bits of the research as well, and have never heard of such a thing.

[@themanfromhell24]

I have a friend who had that happen to him after doing a whole bunch of concentrates, weed can become just like a classic psychedelic at really high doses but most people never do enough to get there.. probably because it's not very pleasant.

[@reidwallace4258]

OK, so any science, or just 'mah friend said' level evidence? :P

[@themanfromhell24]

It wasn't really a scientific claim. you said you had never heard of that as an effect, it just so happens that I have. I've experienced it from other psychedelics and since weed is also psychedelic, it makes sense that it could cause such symptoms.

[@GamingKeenBeaner]

Weed is not a psychedelic. Cannabinoids are a very unique molecule with a very unique interaction with the body's CB1 receptors. There's some overlap with regard to the brain, but some of that is caused by other components of certain strains(terpines, flavenoids, etc.)

[@themanfromhell24]

it absolutely is if taken at high enough doses. it doesn't cause hallucinations by the same mechanism as tryptamine and phenethylamines do, but it still alters your perception, which is what a psychedelic does.

[@elenagibbons4719]

Woah... that one eye closed example was mind blowing, it made so much sense.

[@CrazyNerdMonkey]

cool video, my mother can't see anything on her left side because of a brain surgery to remove anyrizms.

[@Aarygon]

Omg it's Exurb1a!! Love it!

[@kamacazi8]

Spoiler Alert: He ruins Jurassic Park. Sigh, I saw that when I was younger, my youth!!!

[@frostythesnowbob607]

Fox Mulder I heard tgat frogs can only see things that move mabey the reason why the t-rex can't see still things is cuz they have frog vision? I guess?

[@a-bird-lover]

kamacazi8 Well, sorry bud, but there's a lot more to ruin about jurassic park. Like how most of the dinosaurs aren't from the jurassic period, velociraptor was really the size of a large domestic cat and covered in feathers, dilophosaurus didn't have a frill or venom and was much larger, and dinosaurs wouldn't roar or screech but sound more like a cassowary on steroids. They still were and are really cool animals, but they're a bit different to the ones movies portray.

[@closedupshop4172]

Thanks Exurb1a, very cool.

[@darexinfinity]

No color talk? Thumbs down.

[@majesticchajestic6976]

Your an intellectual that does proper research. I'm going to subscribe! Very informative video thank you.

[@BLINDHAVOK]

Great video man! I've been visually impaired since the age of 16 and I was diagnosed at 17. I have posted this video on the blind awareness facebook page as I find it educational, especially to sighted people.

[@thesonicspeed]

my favorite form of blindness is that nightmare concept you showed us

[@Т1000-м1и]

The later in the video I am, the more I think that there should be "when tired" versions specifically for me

[@GN77340]

This video has to be the most informative KZbin video I've ever seen my tire life

[@FieldMarshalFeels]

That inability to perceive motion happens when I take a big dab. Feels like watching a slide show. Weird as hell.

[@lukas.caldwell]

If you can’t see motion then is the ground invisible.

[@dylansmith3660]

4:48 - Looks similar to Nystagmus. Actor Pruitt Taylor Vince has it. He often used his deficiency as part of his film and TV roles.

[@tenchimuyo69]

Though not related to the vision topic, the ferret's attention to your speaking snapping into a full understanding of a few English words as they are spoken is pretty brilliant for how animals seem to understand human speech. Could make some more animal episodes too.

[@ogregriffiths6069]

Hi from the UK , I really enjoy your content . I've noticed a couple of things watching your videos to do with common sayings. Like you say " You can't see the wood looking thru the trees". We say " You can't see the wood for the trees" . Also You say " Take that with a grain of salt". We say " Take that with a pinch of salt". We also have a pet ferret called "Timber" funnily she has an American accent .lol . Keep the channel going your style is very interesting and engaging.

[@emilyfredrickson9009]

I wish you wouldve talked about what it is to be classified as legally blind. As someone who was born almost 3 months early my eyes were very much underdeveloped (I had to have my sinuses and tearducts opened via surgery because I didnt really have any...) and i was called legally blind for the first eight years of my life. I did suffer from a lot of what you said in the video and still sometimes do (apraxia, etc.), but a great majority of my symptoms have gone away with physical therapy and corrective lenses (I'm even allowed to drive! Yes, once blind person can now drive of they are wearing their glasses). I also have issues with light intensity (I cant see shit if its bright, I cant see shit if dark!)

[@pategustavo4392]

I hope you're doing well

[@WanderingVeteran]

I see excellence in you.

[@WanderingVeteran]

I love learning hear.