Is Reality an Illusion?

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Күн бұрын

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Optical illusions are fun, but they can also teach us a lot about how our brains work. In particular, how our brains accomplish the incredible feat of constructing a three-dimensional reality using nothing but 2-D images from our eyes. A young artist and psychology researcher named Adelbert Ames, Jr. developed a series of illusions that help us understand how this process of constructing reality actually works. Sometimes we need to be fooled in order to gain understanding.
We'd like to acknowledge Dr. Phil Kellman from UCLA for his helpful discussions about the principles of spatial perception at play in these illusions kellmanlab.psych.ucla.edu/
Special thanks to Brian from Real Engineering for 3D printing the anamorphic cube for me! / realengineering
References used in this episode: sites.google.com/view/referen...
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Пікірлер: 710

@besmart 2 жыл бұрын

Which illusion hurt your brain the most? Leave a comment and let's see which one wins!

@saatvikjha4035 2 жыл бұрын

Okay

@jonahjerryson4913 2 жыл бұрын

Obviously the window spinning one Like "What in the cerebral cortex is GOING ON HERE??"

@marakiiii 2 жыл бұрын

Yesss

@karamimamali6139 2 жыл бұрын

I guess everyone gonna say window one

@TiberiusMoon 2 жыл бұрын

Not in the video but Time. The rate of which we observe energy move matter through space in some shape or form. The faster rate we observe reality the slower time progresses and obviously the slower we observe reality the faster time progresses. This illusion can make a day progress faster or slower and our other senses help influence this like fast or slow music. Even if we were to travel around the speed of light, time may appear to stop but in reality we are still travelling at the speed of light. This illusion is so good its even fooled scientists to think its a universal constant when in reality its an observer constant, because you cant have time without energy moving matter through space in some shape or form. (Even our senses are based on energy moving matter through space in some shape or form and without it we can't observe time!)

@reddcube 2 жыл бұрын

I wonder if Ai vision is also susceptible to same optical illusions. Because camera are only mimicking human vision I bet only some will work, but then again maybe there are illusions that only work on Ai and not Humans.

@NetAndyCz 2 жыл бұрын

It is, and there have been several car accidents of autonomous vehicles caused by AI suffering from those optical illusion. Also, the AI is really stupid still (do not let anyone try to tell you it is smart). It is trained to see certain shapes, but it uses really weird probabilistic method to get there and it can be fooled quite easily into "hallucinating" you can have "almost" random noise images that AI (specific AI, mind you) will see letters, numbers, and even images). And there is almost invisible makeup that fools a lot of intelligent cameras that will not detect your face properly. (Optical) illusions for AI are quite a fun topic.

@stefanperko 2 жыл бұрын

Adversarial examples

@baddweather6362 2 жыл бұрын

"Reason" by Isaac Asimov follows this exact train of thought and shows the possibility of how an AI could misinterpret their surroundings leading to extremely strange behavior

@GapWim 2 жыл бұрын

For optical illusions involving depth perception, I guess it would depend if it only has a camera equipped or if it has additional aids such as lidar for example. In the former: yes, the latter:no.

@danzoom 2 жыл бұрын

Isn't this just like when a phone camera misidentifies a face?

@B00s3 2 жыл бұрын

I got hung up on one thing Joe said... That Ames abandoned art to create these illusions. I'd argue that these illusions are art, he never abandoned it, he just created very unique illusions with his artistic talents.

@user-ew5vj1sl1u Жыл бұрын

Last time someone abandoned art, Poland was split in half.

@torbenfranck3631 Жыл бұрын

Was gonna comment the exact same thing

@theeverythingchannel9786 Жыл бұрын

i agree

@1112viggo 2 ай бұрын

Sure why not. Anything and everything you can place on a pedestal or put a frame around can be called art. There is no real definition.

@amandab.6078 2 жыл бұрын

the constellation one really got me, like if people were on another planet they'd see completely different constellations?? that's so cool. imagine like a scifi story where they're on another planet and they have a totally different set of myths based on a totally different set of constellations

@emreyurtseven23 2 жыл бұрын

That's why it's all bogus and I have a hard time understanding why so many people believe in it (horoscopes and stuff) in this day and age.

@AlexandroRamosRodriguez 2 жыл бұрын

Other cultures HAVE different set of myths!

@ZennExile 2 жыл бұрын

@@emreyurtseven23 that's just your ego trying to convince you of your superiority. The truth is, only a handful of people at any given time possess enough information, access to resources, and specialized education to "know" anything about why what we see in the night sky isn't what's really there from ALL perspectives. You want to feel superior so you frame it in your mind as this confounding discount scientific literacy level of common sense. But really, all the people you want to feel superior to just have lives that are happening much to quickly to care about your feelings or thoughts on anything. Let alone what concerns and upsets your delicate sense of reality self importance. I could be wrong. I'm not. But I could be.

@Yakeru35 2 жыл бұрын

No need to go on another planet to see different constellations, "just" travel to a country on the other hemisphere :)

@rmsgrey 2 жыл бұрын

Almost completely different, yes. If you're reasonably close, then looking directly toward, or directly away from, Earth, the constellations will look fairly similar - particularly looking toward Earth, where the stars will look dimmer and closer together (and there'll be at least one new star in the sky) but all the stars in that direction from Earth will also be in that direction from your new location.

@renebrock4147 2 жыл бұрын

Thank you, thank you. This has finally given me a coherent explanation for something I've experienced my whole life. Long story: when I was born, the doctor had to use forceps and clipped a muscle in my right eye. The resulting amblyopia was so severe they had to patch my left eye for the right eye to even develop. I was always looking through both eyes, but the eyes learned to move independent of each other if one was covered. Optometrists tell me this is not normal, but a coping mechanism my brain developed. However, the left eye remained very dominant until I lost most of the very central vision in the left eye to histoplasmosis at age 26. Only then did they discover I had pinprick scars all over both retinas, and that I had actually had histo since childhood. Not only did I have to teach the right eye to read, I had true binocular vision for the first time in my life. As a result of all this, most optical illusions have never been visible to me, including the Ames illusions. Looking at such things always gave me a headache which has always been a signal that something wasn't right in my worldview. Thank you.

@silkwesir1444 2 жыл бұрын

That I find unexpected. I would have thought, lacking stereo vision would make you even more susceptible to those illusions, not less.

@Mindseas 2 жыл бұрын

Sounds like you've been through a lot, and I appreciate that you share this! While it is hard to hear, it's also a fascinating example of the weird ways our brains can adapt, so thank you for that opportunity to co-learn from your experience ;)

@renebrock4147 2 жыл бұрын

@@silkwesir1444, I think possibly it is because I was never looking straight at something.

@VeganSemihCyprus33 2 жыл бұрын

A deadly illusion 👋🖐The Connections (2021) [short documentary] 💖🙌✌

@renebrock4147 2 жыл бұрын

@@VeganSemihCyprus33 Aside from running on several false assumptions (including the base one that humans and their creations are not part of the natural world), how is this germane to the topic at hand?

@Brosephv 2 жыл бұрын

The Ames Window always blows my mind. when the pen goes through the window, it's almost like a glitch in the matrix

@VeganSemihCyprus33 2 жыл бұрын

A deadly illusion 👋🖐👉The Connections (2021) [short documentary] 💖🙌✌

@elainebelzDetroit Жыл бұрын

And I found when I focused on one end of the pen, the window rotated correctly!

@MoorganHart 2 жыл бұрын

I’ve seen this subject done by some of the more physics oriented channels (e.g. Veritasium and Vsauce) before, but I liked getting Joe’s perspective on it. He definitely approaches it from a different angle. That being the biological factors which lead to one’s perception of illusions, rather than just the “coolness” and math. I used to think the fact that I couldn’t see illusions was another aspect of my mental disability (autism), but now I’m wondering if it means that my perception is better than normal? Maybe a trade off; better perception of reality at the cost of being able to relate to people. I compensate for my autism pretty well through memorization and understanding the things I don’t inherently perceive, so maybe it’s not actually a bad thing over all.

@swedneck 2 жыл бұрын

I wouldn't say it's better or strictly worse (obviously it kinda sucks to not be able to recognize emotions easily), just different. That's how i view most neurodivergence. The way it seems to me is that autism turns off a lot of image recognition stuff in the brain, so you're seeing a more raw, unfiltered view of the world, so to say. IIRC people with autism often describe that they see component parts of stuff they look at, rather than identifying them as a whole, is that correct? Like a face is two eyes, eyebrows, a nose, and a mouth, whereas a neurotypical person like me just sees a face as a whole, and it takes some concentration to look at each part separately.

@VeganSemihCyprus33 2 жыл бұрын

A deadly illusion 👋🖐👉The Connections (2021) [short documentary] 💖🙌✌

@VeganSemihCyprus33 2 жыл бұрын

Dominion (2018) 👀👍

@AsmodeusMictian Жыл бұрын

So, I'm curious. If you don't mind my asking, are you able to see ANY illusions at all, or is it just 'most' of them? This sort of thing floors me to think about, because we go about so much of our lives just assuming that the electrical signals that are hitting our grey matter are an accurate representation of our world. They aren't, at least not in the truest sense. It's just surreal to me I guess.

@Kartaal 2 жыл бұрын

I'm a little surprised shadows weren't mentioned. Two objects of the same size, seemingly at the same 'height', can be mentally positioned either next to each other or along a diagonal line away from you based on whether their shadows are right underneath them or one of the objects appears to be 'floating' away from its shadow. And that's just for two objects that don't have shadows overlapping each other or other objects you can see in an open space. Shaded objects also do a ton to help you figure out distances, positions and sizes.

@ginnyjollykidd 2 жыл бұрын

That's exactly why the box was painted black and the chairs and chair illusion were on a black background. Oh, and the Ames window, too. But it didn't matter in person. Shadows, real or fake, screwed up my brain badly!

@Emma-zc5jm 2 жыл бұрын

Seems like the video focused on perceptive clues/rules rather than everything that affects visual perception like lighting and colour, as you mentioned with shadows.

@VeganSemihCyprus33 2 жыл бұрын

A deadly illusion 👋🖐👉The Connections (2021) [short documentary] 💖🙌✌

@VeganSemihCyprus33 2 жыл бұрын

Dominion (2018) 👀👍

@TRUTHorSTFU 2 жыл бұрын

Shadows? Well shadows are the absence of light so in actuality, they do not exist nor can they be seen because they cannot reflect light. lol

@sidrykchewo 2 жыл бұрын

We tend to believe that perspective is the way we perceive the world. But it’s a projection (technique) that matches our views, on a cultural and scientific level.

@OleanderSmoothie 2 жыл бұрын

Thank you for actually building each of the Ames illusions! Seeing a real, physical model is so much better than just a picture or digital animation!

@kylefer 2 жыл бұрын

Check out Veritasiums video on it.

@Ottophil 4 ай бұрын

Temle grandin did it first!

@Ewr42 2 жыл бұрын

I mean, the fact that we can extract information from pixels and digitally generated sound waves is amazing In of itself already

@chrisg3030 Жыл бұрын

As the 15th century wore on, not only did art go from looking like this (6:19) to this (6:21), but also the solar system went from looking earth centered to sun centered, once the Ames window-like illusion of planetary retrograde motion had been figured out by Copernicus.

@didack1419 8 ай бұрын

That's an interesting realisation

@tylermacdonald8924 2 жыл бұрын

Did anyone else as a kid just lay in bed maybe early in the morning and imagine spaces so huge you had to stop imagining because the expanse felt so huge? These optical illusions remind me of these vivid scenes

@chipersboy01 2 жыл бұрын

I like the idea of someone ordering an Eames chair and then receiving the (significantly less practical) Ames chair instead.

@besmart 2 жыл бұрын

I hope this happens

@micahbirdlover8152 Жыл бұрын

@@besmart I used to think 🤔 maybe I'm mind Warping 🤨🤭😀🤪

@TiagoTiagoT 2 жыл бұрын

The Ames Room illusion actually can still work with two eyes; I've been to a couple full sized ones, and with the right lighting and with the surfaces kept clean, you might still get the impression people on each corner are somehow the wrong size or change size as they walk across. The effect does break down if you move too much or if you're too close to the walls and stuff though.

@makoyoverfelt3320 2 жыл бұрын

I'm really glad that the last several videos from this channel feel like they've come back to the original spirit of the channel. Keep making great, educational, and entertaining videos!

@nix9vex13 2 жыл бұрын

This goes to show, digging your heels in the sand and not changing your focal point of view isn't healthy and you can be thus be fooled easily. So stay flexible people and "look" at things from different angles and only then make up your mind. :)

@AceSpadeThePikachu 2 жыл бұрын

One of my favourite famous optical illusions in MC Escher's Endless Staircase. It works no matter what angle you look at it and whether you look at it with one or both eyes, because it plays with how the brain processes 2D images to try and create a 3D world. But since some images, like the endless staircase, are physically impossible in 3 dimensions, it makes the brain got "WTF?!"

@Mindseas 2 жыл бұрын

This was great, because it isn't just "look at these cool illusions, lets figure out how they work"! It's funny to see how unreliable our ability to perceive things is, and maybe would've been worth mentioning not only does our perception rely on educated guesses, it's also always behind reality, so we technically cannot live in the now in terms of our senses. I think the distance illusion with the two dots or circles suffers a little from the camera focus, because you can tell the right side is closer by just looking at how detailed the surface is. Granted that's much easier to do afterwards when you know what it's about. The Ames' window is still really funky to look at, even after seeing this and the Veritasium video on it, it seems unreal that it's persistent and takes quite a bit of effort to override the automatic error correction to actually see the motion as it truly is. Fascinating stuff!

@SgtSupaman 2 жыл бұрын

As was pointed out near the end of the video, our perception is actually very reliable. These tricks only work from an extremely limited point. It seems impossibly magic through a camera, but our eyes in real life will see through many of these without issue.

@SeaTacDelta 2 жыл бұрын

13:40 Dr Becky did a fantastic representation of Orion in her office a while back. It's amazing to see such a common sight from a different perspective.

@chrisg3030 Жыл бұрын

One of the eeriest and yet most frequent illusions is when you go past an airport in a car or train and see a plane apparently hanging motionless in the air.

@ibnuzzaki9859 2 жыл бұрын

It's always amazing the fact that mirrors and other flat, reflective surfaces also reflect depth

@lesleyghostdragon3149 2 жыл бұрын

It's no illusion that this is one of the best (concise, informative, and fun) science shows available! Thank you for helping us "Be Smart" 🤓 Staying curious 🖖

@riddhichakraborty4890 2 жыл бұрын

"Very different people see/perceive the world the same way." WOAH. It is a powerful thing to say. Thanks Dr Joe for making this video. PS: the joke about Orion was good😂😂

@AlphasysNl 2 жыл бұрын

Is it really true though? I would agree with shapes, but what you see as red, and thus call red, I will also call red, but might give me the sensation of your green.

@VeganSemihCyprus33 2 жыл бұрын

A deadly illusion 👋🖐👉The Connections (2021) [short documentary] 💖🙌✌

@daveyc02909 2 жыл бұрын

@@AlphasysNl Wouldn't that just mean that you call the same visual phenomenon (the color) by different names (so still seeing the same thing)? I think the fact that some can't see a given color is more of a counter example

@chrisg3030 Жыл бұрын

That Orion joke reminds me of another KZfaqr (I think it was Dr Becky) saying that some galaxies look Messier than others. Groan.

@xeostube 3 ай бұрын

As a vision scientist, I think this was a pretty good coverage of these kinds of illusions and what they tell us about the human visual system. Well done, Joe.

@ellepalmer4590 2 жыл бұрын

When you mention the two eye trick, I have that, but most of the time my brain doesn’t know which one to use do I always see both. It does this because I have an astigmatism in my left eye. It learned to ignore it. WoW. But now my brain has to learn it that it is getting correction from my glasses.

@cocobeans3742 11 ай бұрын

As a person that sees (mostly) out of one eye, I can tell you there is a difference between watching a screen and real life. I don’t see in full three dimensions, but because of the cues the brain picks up I think I see way closer to 3d than 2d. Thank you brain

@girlsdrinkfeck 2 жыл бұрын

parallax scrolling was used in old games to give us depth perception ,thats why so many animals move their heads side to side to determine depth of an object

@renebrock4147 2 жыл бұрын

Most prey animals don't have binocular vision while most predators do for the very reason of depth perception.

@chrisg3030 2 жыл бұрын

On other occasions an animal will stop its own motion to detect whether that of a distant object is apparent or real. Examples are when you're out walking and stop in order to know if that dot on the horizon is another walker or just a rock. A dog will do the same as you approach it from a much shorter distance, but then they're supposed to have poorer vision than humans.

@girlsdrinkfeck 2 жыл бұрын

@@chrisg3030 snake charmer etc.

@STRUCENGG 2 жыл бұрын

the amount of effort in making this video is amazing👏

@basil127 2 жыл бұрын

0:55 it was green screen all along?

@besmart 2 жыл бұрын

😎 yep

@spoicat5459 2 жыл бұрын

Smart

@randomheliumball7505 2 жыл бұрын

Smartly smart

@micahbirdlover8152 2 жыл бұрын

a big mess funny 🤭😄

@micahbirdlover8152 2 жыл бұрын

@@besmart I really love your videos 😉 I'm nerd for it🤓 there 😊

@Johny40Se7en 2 жыл бұрын

What an absolutely wonderful and thought provoking video, and it's also why a lot of magicians' illusions works so well 🥰😊😄 I've always been quite fascinated with the kaleidoscopes you use when you're a kid too 😉 Cool stuff.

@VeganSemihCyprus33 2 жыл бұрын

A deadly illusion 👋🖐👉The Connections (2021) [short documentary] 💖🙌✌

@rb.arindam Жыл бұрын

That window, seen it first in Veritasium’s video. It broke my brain for a good couple hours. Today when I saw it again, I was able to tell it was rotating clock-wise viewed from top. Which your hand gestures later showed to be accurate. And it became lot more clear when you put that blue stick on it. Last time that felt like a nuclear weapon thrown in my brain. It's still a little fuzzy when the shorter edge is at my closest, but overall I was better at seeing it.

@waynedarronwalls6468 2 жыл бұрын

Always loved the Belvedere Impossible Building...it's just so counterintuitive when you look at it really closely.

@TheLastCrow5150 3 ай бұрын

Multiple sclerosis started warping my senses and it got worse after the disease progressed. Psychadelic therapy has completely changed my primary visual cortex. Not only can I see better, my eyes interpret everything at a much higher level as well. Therapy permanently changed my vision. I prefer this to being blind

@SilverAura Жыл бұрын

The Connectivity illusion hits me the hardest as someone who frequently creates 3D assets. You almost have to keep your attention split between multiple point of views to avoid creating these illusions on accident. Depth perception is the one thing I was excited to gain from in 3D monitors, but that market went bust.

@luismijangos7844 2 жыл бұрын

Excellent video Dr. Joe. You made a lot of work for the illusions. I appreciate it.

@AvroBellow Жыл бұрын

There's a gigantic mural in downtown Montreal on the Mission Old Brewery. The artist was an absolute genius because it looks 3D. It looks like the Montreal Metro is coming towards you from far away. When I show it to people, I blow their minds by pointing out that it's a 2D image on a flat wall. The mural itself is about 50' tall so I shudder to think about how long it took to paint it.

@readwithhaziq Жыл бұрын

Indeed your channel is one of the best educational channel in the world. I have watched all your videos and I love them. In fact I started watching your videos when I was 12years old through TV channels. Those times I did not know English but I used to watche them in persian. Lots of love and respect

@bumblebeegamerreal 2 жыл бұрын

Its been a while since you posted, and I gotta say that this video is worth watching

@martti1190 2 жыл бұрын

But you haven't watched it yet... The video came 18 minutes ago and you commented 15 minutes ago. Stop farming for likes

@Jskid666 2 жыл бұрын

@@martti1190 bruh, 2x speed is a thing... Stop assuming the worst in people.

@martti1190 2 жыл бұрын

@@Jskid666 The video is 20 minutes long with 2x speed the video is 10 minutes long. And he posted the comment 3 minutes after the video came out. There isn't any way he could've watched the video in 3 minutes. So no, I'm not assuming, I'm stating a fact

@randomheliumball7505 2 жыл бұрын

@@martti1190 lol true

@randomheliumball7505 2 жыл бұрын

@@Jskid666 but why would they watch it in 2x speed I mean the explanation isn't clear and it's literally pointless

@DuskPixel 2 жыл бұрын

This was one of the most interesting videos I’ve ever seen! Thanks for notifying us about this issue.

@I4get42 2 жыл бұрын

Great video as always! Another example of knowing how an illusion works that helped us understand the world better is how our Moon and our Sun seem to be about the same size. Again because of their relative size and distance. During a solar eclipses, when the trick is the most convincing, we can learn so much.

@Beryllahawk 2 жыл бұрын

Fun video!! I hadn't realized that Mister Ames did ALL those different illusions. I've seen the Ames room and the Ames chair before - but the window was a new one to me! And it made my eyes feel like they were gonna cramp, haha Brains are incredible, and the more we learn about them the more incredible they seem! Great video!!

@Tsskyx 2 жыл бұрын

6:20 this is actually a historical misconception, medieval art wasn't like that because people didn't know how to draw, it was a preferred artistic style back then, sort of like with Corporate Memphis nowadays. It's distorted on purpose, to reveal more action, to allow for abstract symbolism, and so on. It is the difference between iconography and scenography, both serve their respective purposes.

@TyrannoFan 2 жыл бұрын

Thank you! I keep seeing this weird myth everywhere, and it always sounds like total nonsense. We have EYES for god's sake! People really think any human artist in the history of time couldn't just look at things to figure out how to draw in perspective? C'mon man. The context of artwork is important. I'm not a historian, but a loooot of art back then was in pottery and shaped objects. What use for perspective would they have in those mediums? It's no coincidence to me that perspective paintings became common when... well when paintings on flat surfaces involving geometric architecture became common?

@funkyskitchen 2 жыл бұрын

I think those Magic Eye pictures from the 80s and 90s are another great example about how sometimes info can be shoehorned into our perception.

@ryvyr 2 жыл бұрын

Super appreciated as always, especialy having non-adsense at end or beginning rather than interrupting videl. It makes such a difference, more than brief words do justice. As for RealEngineering, unfortunately his FUD on solar/wind and push for hydrogen and partnership with Toyota means no support for myself and like minds.

@Ewr42 2 жыл бұрын

a cool illusion I like, is to look at the Arc of the milky way, then tilting your head to the side and realizing it's a straight line. also works on sunsets for those that don't have a clear view of the night sky

@Credlich05 2 жыл бұрын

i was waiting for the video to mention depth perception, it was something i was born without because i can only ever use one eye at a time

@SlowToe 2 жыл бұрын

I perceive this channel as excellent no matter what the circumstance.

@jacksoncross9265 2 жыл бұрын

bro hes so great too

@julianschwertzthewoodlands4161 2 жыл бұрын

1:56 You got me good here....love this type of illusion!

@ReiDaTecnologia 7 ай бұрын

The most incredible part is that the brain do all this process in milliseconds for each frame while also taking care of the rest of the body's functions, shows how powerful the brain is.

@Rabano_Yodado 2 жыл бұрын

What You said at the end, before the ads, was amazing

@nariu7times328 2 жыл бұрын

Love that you build the chair one!

@elisa.llew-send 2 жыл бұрын

Loved the John Green shout out and the library nod was excellent

@georganatoly6646 2 жыл бұрын

as a software engineer makes me wonder how effectively these perspective hints can be quantified and incorporated into something like the software that parses image files generated from a camera for image based AI, being able to cull large amounts of data based on these hints might be an effective way to reduce the number of objects the AI has to interpret, assuming the implementation of the culler didn't prevent the AI from hitting its hard real-time requirements, obviously there has to be some set of existing object culling algorithms in image based AI already, wonder if any directly use techniques like this, I would assume they'd have to be relatively simply and thus efficient based on the fact that they're 'cognitively impenetrable,' but then again maybe that's like saying, 'because I can't choose to see something as green instead of red it then must be easy to distinguish color' -- anyway...

@nickadams9504 2 жыл бұрын

Machine Learning for images mostly use CNN (convolutional neural networks) but they could also use just a dense NN. The training time on a dense neural network for images is insane though especially when considering lots of images. That being said in a way they are being trained on these "rules" of reality in a sense as we feed them images with perspective typically. Something else interesting is you can have separate hidden layers learning features of a specific subject. For example, a dog can be broken down into limbs, ears, face, and etc that way if you just see ears in an image and nothing else it can still classify them as dog or not dog. In this way the model is constructing an object in reality from more ambiguous sub parts. It's really cool stuff you can even use this approach with a GAN which was displayed by NVidia recently to do image editing, transformation, or just creating whole new objects from what it learned and constructing the image out of its sub parts.

@ketsuekikumori9145 2 жыл бұрын

Speaking of constellations. What are the most consistently used stars across cultures? I'd imagine the north star, the southern cross, orion's belt are pretty universally recognizable, but are probably grouped with different set of stars depending on the cultures' constellations. Take the north star for example. It is usually grouped together with the Big Dipper and/or Ursa Major, with Ursa Major taking the Big Dipper and adding more stars to make the bear's body.

@NakedSageAstrology 2 жыл бұрын

The most common are shared among the 28 constellations attributed to every major culture & their study of SpaceTime. Jyotish, Vedic or Indian Astrology- makes use of the 27 Nakshatras & you will find the Codex of This Celestial Dream within its mansions. If you want to know the Secrets of This Youniverse, *RorriMaesu says useaMirroR*

@ObjectsInMotion 2 жыл бұрын

Remember the North star changes as the earth slowly precesses on its axis, 3000 years ago the north star wasn't polaris, and famous stars like Deneb and Vega have even been the north star before!

@daveking3494 11 ай бұрын

Exactly the same thing happens with our hearing as well. In music, if you just hear a C major chord, you assume it’s a piece in C Major. but depending on the context of the music following it, the piece might actually be in G Major, or F major. This is common knowledge, among musicians and composers. It has been used for hundreds of years to fool the listener, which makes the music more interesting! You could do a whole program on how our ears fool us as well.

@cckenforcer Жыл бұрын

I watch Veritasium’s video on the window illusion 1 year ago and couldn’t see it at all, but now i can and can’t unsee it.

@bobtuckey2409 2 жыл бұрын

Very cool Joe! A fascinating topic.

@Warekiwi 2 жыл бұрын

Excellent video and helps to explain the huge task that Tesla engineers have in trying to interpret the real world situation from 8 cameras with the eventual aim of achieving "full self driving"!

@chrisg3030 2 жыл бұрын

15:43 "One of the strange things about most of Ames' illusions is most of them only work with one eye from a very specific spot, which is why so many of them work so well in video". But there's one rotation illusion you can see with both eyes in 3d reality from a locus of positions. A two bladed wind turbine when seen off to one side will appear to rotate jerkily, but smoothly when viewed head on. The best explanation I can think of is that the circle traced out by the blade tips will foreshorten (or perhaps "forenarrow") to an ellipse when viewed from an angle. The tip of a blade has less apparent distance to cover when approaching and leaving the vertex (pointy end) of the ellipse and will thus appear to slow down to compensate, and correspondingly speed up when passing through the co-vertex (flatter bit at the side). KZfaq has some examples of two-bladers, but go visit in person if there are any near you.

@chrisg3030 Жыл бұрын

So what's the brain doing here? Does it deliberately slow down the blade tips in order to keep phase with them?

@venividdivici0 2 жыл бұрын

would love to see more of this 👏🏼

@donevans1884 2 жыл бұрын

what a brilliant video , it really makes you think , thank you .

@trinab.787 2 жыл бұрын

I love all of the models you made for this

@shardinhand1243 Жыл бұрын

i love how ilusions can mess with sight, our brains interpret signals in a predictal way and knowing that way means some interesting tricks can be done like on demand hilusinations from patterns that mess with our brains ability to recognize paterns and stimulass.

@rhouser1280 2 жыл бұрын

16:36 I've never "seen" this one before, it was pretty cool!

@martinomasolo8833 3 ай бұрын

It was a joy to see you play with these illusions (and with our minds😂)

@ingridfong-daley5899 Жыл бұрын

I experienced a traumatic brain injury in 2017, losing my identity, about 10 years of my life, certain language abilities, and, interestingly, a shift in my visual processing of illusions. Rather than seeing one illusion or the other, i now see all permutations/angles simultaneously. IDK if it's exactly related, but post-TBI I also gained math and science skills i hadn't had before--like I now see/think in geometric pictures rather than linear constructs. I keep wishing a neuroscientist would take me on as a guinea pig to explain more about it.

@antoniosilveira6392 2 жыл бұрын

Very cool video! There could be one on the following about the evolution of human vision (and possible other animals visions). How has our sense of perspective evolved? Do other animals have our same sense of perspective? Can some interpret even more clues?

@premnaren8675 2 жыл бұрын

That was one of the coolest intros ever! AWESOME

@irmarakhmanova 2 жыл бұрын

Mesmerizing video, thank you! Strongly recommend the "Superliminal" game that is all about this sick stuff in practice ☝🏽

@Marandahir 2 жыл бұрын

This is why they could film Lord of the Rings with anamorphic sets and foreshortening designs to achieve the size differentials between Gandalf & the Hobbits, but when they filmed The Hobbit with 3D cameras, they had to use different techniques to achieve the same height differentials - such as constructing two parallel sets at different scales and digitally fusing them in post-production, or else by filming them together but during post, digitally cutting Gandalf out, increasing his size, and pasting him back in.

@erichowry7197 2 жыл бұрын

Great video!! I learned a lot!!

@tmrogers87 2 жыл бұрын

This seems like it was a really fun video to make. Thanks

@Skyben2 Жыл бұрын

I've searched for this video, because I saw an Ames-Window in the background of another video. Veritasium also has a very cool video about this.

@safaiaryu12 2 жыл бұрын

So due to some medical shenanigans, I only really use one eye even though both work. My depth perception isn't great, but I'm good at these clues you're talking about like relative size, blurriness, and perspective. Oddly, when I was in art classes, I picked up one, two, and three point perspective faster than anyone else, and I think it was exactly because I have no natural depth perception.

@MadMaxV Жыл бұрын

i remember doing that pen trick with the eyes as i was curious about eyesight when i was 6 years old lol.. that was 25 years ago :D bout time someone did a video about it :D

@stevenfoster3912 Жыл бұрын

We've watched alot of your videos.. 👍🏻👍🏻👍🏻 3 out of 4 thumbs up (I suspect the 4th was switched at birth 😒) But seriously, very well done 👏🏻 I love seeing knowledge freely shared. You obviously worked hard for the education you have attained, and I am deeply grateful that my children and I can share in the fruits of your labors. "A society grows great when old men plant trees whose shade they know they shall never sit in."

@lizellafernando1780 Жыл бұрын

I love how he edits in the greenscreen instead of the other way around

@tentanghukumkita6381 2 жыл бұрын

8 Illusions That Explain How You Create Reality Very interesting and helpful explanation ❤️

@ewerybody 2 жыл бұрын

9:00 that's Frankfurt! Bahnhoftviertel!! 🤘 Pretty early in the morning. There is usually much more going on. Guuuuude!

@ginnyjollykidd 2 жыл бұрын

I've seen an Ames window in person using both eyes, and I _still_ couldn't figure out how it was turning! The shadow of a ballerina turning? I can perceive it clockwise, counterclockwise, and oscillating alternately with little effort. But the Ames window completely baffles my brain.

@--Paws-- 2 жыл бұрын

That kindergarten drawing analogy says a lot, I feel like this should be a course in some art classes, specifically that analogy.

@eileennono5039 2 жыл бұрын

The Sugihara illusions are a great example of "this makes my head hurt" as well.

@b.8225 2 жыл бұрын

I love this channel soo much.🍀🍀🍀🍀

@kittylynx8911 3 ай бұрын

Ur the best love ur jokes u ale learning more fun then it already is

@MauricioGuevaradiaz 2 жыл бұрын

Great episode, thanks a lot

@wolfbro82 2 жыл бұрын

I had a very hard time learning to read as a kid. I remember the first book I ever loved was all about visual illusions. OPT

@brendawilliams8062 2 жыл бұрын

Love the imaging 👍

@karamimamali6139 2 жыл бұрын

it's first time that I see this channel , it's really good

@donaldinnewmexico 2 жыл бұрын

RABBIT HOLE!!!

@micahbirdlover8152 2 жыл бұрын

mine too😊

@hideninja1546 Жыл бұрын

When I was young I used to do it for fun because it was beautiful to watch in my eyes

@diffcontroversy 2 жыл бұрын

Love this show, but there were 9 ads. 9! That's insane.

@TachiTekmo Жыл бұрын

Reminds me of the MagicEye™ books from the Nineties. Those things were radical, man. 🤯🤙

@AddisonReece 2 жыл бұрын

Well done.

@mnms555 2 жыл бұрын

What can happen in one second? Please make your next vidoe on that because that is kinda and interesting topic

@brianmagner9220 2 жыл бұрын

About the constellations... on star systems that are close to ours, only the very near stars would be noticeably different, and most of the constellations would be similar. If you went out 100 light years or more, the constellations would be very different, but not from only 4 light years away.

@timfriday9106 2 жыл бұрын

thats why so many shooters argue about whether you should look through a sight/scope with 1 eye or 2.

@InimicusSolitus 2 жыл бұрын

This got me thinking. When measurements are taken at the quantum level, are we looking with "one eye", and missing vital information we just can't detect, and that is why Quantum Mechanics seems so weird..?

@greg-op2jh 2 жыл бұрын

I'm epileptic and believe me when I do have a seizure my spatial perception gets all f'd up. It is very important!

@nightthought2497 2 жыл бұрын

The Ames window is not cognitively impenetrable. There is a subtle clue, that once identified, breaks the pattern. Now, most Ames windows have a characteristic curve, due to the nature of their construction which gives it away, but even in a perfectly constructed Ames window, the "far" end changes size dramatically compared to the "near" end. Once that feature is identified, it is exceedingly difficult to shift back into the illusory frame. The Ames room is perfect due to the stationary state of the illusion generating space. But the moment you add true motion to an illusion based on depth perception, several nuances of motion perception add new features the can break the illusion.

@roderick.t 2 жыл бұрын

The light scattering from the atmosphere near the Earth’s surface is also a visual cue that we all use. In the daytime, objects that are further away appear ‘brighter’ due to more air particles that scatter the light compared to objects closer to us - a subtle effect our brains grow accustomed to. On the moon, there’s no atmosphere, and the astronauts frequently misjudge not only the distance to an object but also its physical size.