The "Mountain Or Valley?" Illusion 

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But I'm on a computer...

FrodoTheDodo I did as instructed. Then my screen auto rotated

take a screenshot and flip it

@Muffycat: Then press Ctrl + Alt + Down.

UK isn't part of earth? Jesus...I think I misunderstood Brexit...

ZeroSum23 haha 😂

ZeroSum23 o Oh god we're leaving Earth now as well? Brexit is even worse than I'd imagined! Are we expecting to get a trade deal with the Venusians now?!!!

brandybuck1984 let's just hope we don't leave the solar system next. *2 weeks later* Government: I have an idea let's leave the solar system! Me: jinxed it :(

Even worse: Uranus. ...Okay I have to apologize. That was a shit joke.

@Biological Donut “were”?

Y... yes, were, i f you were... the only other two variations of “were” are we’re, which is “we are” and where, as in where is that thing. If you Were a human is correct.

Julia Rainbow The thing I was trying to emphasise is the fact that it was in past tense, implying that that’s not the case any longer.

@@godofallpotatoes1614 I mean in 10 years there'll be people in mars, so lil' Jimmy the Martian will see this video and get confused

@@godofallpotatoes1614 no. "If you were x" Is an unchangeable phrase. So the tense does not matter.

Same

me too

same i looked at it too long the first time and now it's stuck 4 me

Same

Same!

ChromeVault What about it being a reflection in water?

BAHAHAA BUHUHHHU

I can here the voice of patrick god

A mountains? A sky. A windmill!

666 likes

I grew up on uranus

You can't grow up on Earth, if you don't grow up at all...

Is England also your city?

+Jomer Tomale No, England is my State

A perfect example of Poe's law.

Try closing your eyes for like 10 seconds as you’re turning the screen upside down so u don’t see the switch

Albin Liungman now I see it, but that bottom part still looks like mountains

For me it helped to look at that cloud/smoke plume and its shadow since my brain latches onto its correct orientation much more easily

I can

in photos...

@@georgf9279 those photos looks pretty much black and white to me. if real time colour even looking from above wouldnt make u confuse.

Vinh Pham they arent edited

what system do you see most commonly?

doesn’t even work for me: a colourblind person lmao; have to use numbers to mark the heights

That's so interesting tbh. Thanks for sharing!

didnt know that but it makes instant (clicking) sence - thanks

The Nuggernaut greatness

And now i cant unsee it

Lol

Look at those dry crusty lips, be looking like a shriveled leaf.

@@islandprincess714 thanks a lot now I can't unsee a shriveled leaf

nice

I got that!

Haha

The Centalist vsauce Michel here

It would collapse into a plain.

is it really both a mountain and a valley?? or is it??

A Vatain or a Mounlley

That's crazy, it's the complete opposite for me. I can see both "Concave" and "Convex" as being concave, and takes me a bit of effort to see the "Convex" as actually convex.

welp, i was able to see convex as concave and concave as concave, and both looked convex. this illusion is mind blowing

Ooooooh snap!

They also don't erode out of the ground.

But they DO erode the ground!

Feynstein 100 what about vsauce?

+Anuj Gupta Eh stopped watching him a while back. But okay. Let's add him to the mix.

fair enough, tho he really only makes like 1 video a month

*year

Alien FeelsBadMan

I never had to study for geometry,

K

@@mahparanuren1514 hahahaha

uh hu

ALIEN! Can we be friends? (jk :C)

Me either. Tarmac and carpet.

Are you still small?

*deported*

Lusitani Mendes I stopped the video and read it too

ಠ_ಠ

Lmao this comment is amazing.

Having grown up on Tatooine, I can relate.

Vartika Singhai I'm from Trenzalore and this fucking truth field sucks balls.

On Alderan we used to have this light grey moon

same reply

Ya, that's on earth😂

I do understand that reference

Yeah that's on earth dipshit, what are you hustling on us for?

You shoot my guy I blast yours!

Thanks! Was fun to learn how to do, maybe it will show up in other places (though I really want to do it with hand-drawn art).

minutephysics we would love to see hand drawn minutephysics.. but the animation is really 💗💗

Real Engineering neat it's real engineering

Nicholas Braden I didn‘t see any difference between all the maps he showed etc. _I never go outside_

The Unicorn Neither do I #nevergooutsidegang

I was looking for quirky toxic comments like this.

Duffy United I

3:19 and oh my god, everything is a mountain. In between every mountain is a mountain instead of a valley...what is happening?

You have problems.

Bovine Intervention 1:50 i see it yoing in and out

ya same exept i saw both at the same time

Might be based because digital art often has non traditional shading and lighting and minds grow accustomed to this.

Put your phone upside down

At least he has a face

Why do I suddenly see KSP profile pics everywhere when I just started playing it again ?

Its not because the KSP secret police has been following you around.

ZockerTwins frequency illusion, sorta

No eyes is very common in cartoons. See Dr. Suess books, for example...lots of characters have their eyes closed. And none of the people (or cats) in Henry's drawings have eyes. Ditto xkcd, come to think of it. Probably having something to do with "eyes are the window to the soul" or something. "Soul" being difficult to capture with a stick figure. Plain dots might work...

cool

You must've had a fantastic childhood.

we have no context surrounding why they stared at the wall

phew, glad i wasn't the only one

Noctudeit How sad. That never worked for me because my brain has depth perception.

Ba dum tssssss

I have a pun too, but it's a bit *dark*

L.O.L. Good one's.

Get out of here

_lit_ erally

Architector #4 Whoa wtf

Virtual malware work station? Must be a scam troller

Or just a screenshot

nice bro

I need to know!

_seinfeld theme song plays_

Muffycat 101 No not x-files, it sounds like a Vsauce video

Muffycat 101 😂😂

Just ice from above?

UnderScore Why tho?

Cheers Love The Calvaries Here!!

or shoots up from below

JUSTICE AHHHHHHH

That means your eyes are broken. I find it helpful to scoop them out with a Melon baller and​ then put them back in again

Same

Izamanaick What if i won't be able to see what side of it is concave, and then use te wrong one?

Look harder

Keyboard That's because you probably put them in the wrong socket. When you take them​ out look on the back. It should have an L or an R next to the Made in China stamp.

I failed kindergarten

Eighth Grader Prodigy Explains Calculator Something about your ridiculous username prompted me to briefly take a look at your channel, and my god you aren't nearly as intelligent as you think you are. I know countless people who were much farther along at your age. Yes, this reply is incredibly petty, but something about the way you present yourself made it feel warranted. Unless, of course, your entire channel is very well done satire, in which case, kudos.

I failed my parents

I understand that OF COURSE there are people my age or younger that are by far smarter than me, but at least I am more than average, at least I'm learning derivatives and Vectors in the Eighth grade and at least I made about 5 new theories that are just waiting to be published and revolutionize our understanding of the universe and hey, I may not be the smartest but at least I'm smarter that normal and also at least I'm publishing videos about the stuff I know and contributing to society

" at least I made about 5 new theories that are just waiting to be published and revolutionize our understanding " Like what?

Doesn't everyone? I tjought it was about which one you see first

@@jankisi AGHHHH

Alex haha *kill this meme*

Look up earth TX, it's the place on earth called earth

Ohh cool..mine is Uranus!

The Milky Way Galaxy is my city.

The Robot Pig / lol i thought you said you had a 'detective' eye

aww i feel bad for you, never knowing the awesomeness of 3d monitors or virtual reality..... but then again a flat image on a normal monitor will look just as good, im confused and feel bad for myself now lol

The Robot Pig I feel u

depth perception relies on the triangulation of objects from both eyes, but it's near impossible for people with glasses as well like me, so shadows are important and 3-D videos don't make sense

I have a very dependent eye, so my depth perception was pretty bad too. I remember my optometrist showing me a bee that was supposed to look 3D, but it only ever looked 2D to me. Old 3D movies wouldn’t look 3D. The real D 3D is better though- either that, or my right is less dependent on my left than when I was younger.

That's not true. Imagine extruding a curve with some thickness into 3D space. If you're a point in the plane, you will be able to see where the curve is "backward" from you in space (because you have depth perception, a feature of 2D). So it will appear to you as a two dimensional object rather than a straight line drawn across a single axis. I think you're confusing "object" with the specific case of polyhedra composed of straight line segments. And even in the polyhedra case: if you're a point on the plane inscribed *inside* the base of a polyhedra, you will be able to deduce what kind of polygon the base is by rotating 360 degrees and counting up vertices. So many 3D objects can and do appear 2D from a point perspective in 2D. Plus, by your thinking, all 2D objects would also appear 1D from a point perspective in the plane. There's nothing special about 3D, so you've erred both in your statement and the uniqueness of its implication. I.e.: from the perspective of a point in 3D, 3D objects appear as 3D (barring cases where one axis is obscured / optical illusions), so even if your formula were uniformly correct it wouldn't apply to higher N.

@@otherwords1375 Its not about watching 3D objects with 2D eyes with depth perception in 3D world. If we draw a 3D curve with thickness and I am 2D object myself, then to see that curve, it will first have to be projected on my 2D plane. Even if it gets projected right before me, I will see only front part of projection and not what's behind it. So it will appear 1D. That's, from 2D, 3D objects appearing as 1D.

@@jaydeepvipradas8606 I don't understand what you're saying. I'm not saying that you can see the thickness itself (the surface area), only that you can see *that it is curved* and thereby that it is not a straight line but varies along with a y axis. I.e., that is two dimensional. You don't get curves in one-dimensional space, only two dimensions, so you don't have to see what's "behind it," just the fact that it bends. Which, again, the eyes of a purely 2D point see. This conception of "depth perception" makes no reference to 3D information. Also, see my polyhedra critique. If you are a 2D point inside a cross-section of a 3D polyhedra, you can rotate 360 degrees -- again, a capacity you have because you are in 2D space -- and count up vertices, determining that the object you are seeing is indeed 2D.

I'll admit my metaphor confusing. I should have clarified that what I mean by 2D "depth perception" isn't the kind of 3D depth perception where you judge the distance between points on a plane by looking "above" them in the Z direction (or by looking at their shadows, contingent on a 2D projection of 3D information.) If you have a point A on the plane, you can clearly draw a line through that point and two other points B and C. If AB is longer than AC, A will "see" point B as further away. This is very simple 2D point perspective and what I meant by "depth." I.e., I just mean an intuitive notion distance, which one would certainly have in 2D space. So my argument stands.

@@otherwords1375 Pure 2D object can still perceive depth of whatever is projected before it, it need not see just straight line, this is similar to humans having depth perception in 3D world. But it is still 1D of 3D, because 2D object can not see things that are projected beyond most front side of projection. Rotation and orientation will allow seeing different views over time. But at a single moment in time, 2D would be seeing 1D. 2D object can have intelligence to construct multi-dimensional object by continuous rotations and various orientations, but without intelligence, 2D would purely see 3D as 1D. Your point of view could be correct, but this is my point of view as of now.

dummdumm muddmudd you’re a synergistic synesthesia person

It could just be your perception. Nothing is wrong per se.

yea, you got downs

same

dummdumm muddmudd 0:51 did you grow up on earth?

He reminds me of Rick and Morty's Anatomy Park...

Flight The Goat React's Oh that is why ur black

You must be a ghost. From like the instant you started existing.

@@bunny_0056 -racist- *BURNNN!!*

I was on the moon

I _was_ the sun... ... before it was cool.

I grew up *in* Uranus

I bet you are stinky

Amoooooooohhhh nnnnng us !!! !!!!!!!

LMAO I thought the same thing

ohkeh

PenArt this comment is underrated

😂

Depth perception won't help you very much when you're looking at a picture

Clearly this means we need a third eye!

@@RonDe675 Stereoscopic picture viewing will capitalize on the (for most people) second eye to help provide a better grasp of depth. However, it is not as common, because for EVERY photo, a second one must be taken at a set distance from the first one at the same time, and then EVERY person who wants to (and can) use both eyes needs special viewing technology that will properly display those twinned pictures.

... Mother Earth? ( #CouldntResist )

mother russia

And i am from the city of England

That's what my Nigerian teacher always says when I ask him 'Where are you from'? Good man, he is.

I am from Metal

If you don't know what Earth is, why do you call your parents alien ???

I like to see Henry using different animations, but the appearance of his iconic stick figure should still retain. I see that the proportions of his figure here is different (larger head, slightly shorter arms, and textures different from UnPuntoCircular's version). We'll see if he'll retain those details.

If he can make his animated stuff indistinguishable from the drawn stuff I'm fine with it tho.

Most of the video is hand drawn, he just used adobe to illustrate the convex and concavity thing. chill.

Osimmac, in the sponsored stuff at the end (3:30) he talks about learning Adobe Character Animator.

Vishal Jangid I would call it shit, but I am sure we can all agree that his stick figures are unique to his channel.

@Katelyn Wu nice

Concepcion Ponce My high score was 2 too

Wow noobs

Seriously?! your highscore was 2 on a comment. Mine is not 10, not 100, NOT 1000, But a whopping 3

Kidz Vidz XD

@@jordancooper2038 I love your name

Yee Tee ur kidding?? omg i had no idea like for a sec there i thought u where form mars no joke

MochYee lel XD ur so randem and funny I didn't get the joke until you said JK X🅱️ dttdghdttjrdtjrdyjtyjdrtjdt

B. Hagedash If you aren't joking, its time.

I would say both. It's "science in a minute (or four)" and it's "bite-sized science". He does pronounce it in the same way the unit of time is pronounced, though.

Cool, I'm a new viewer so I haven't heard him say his channel name in a vid yet. Or I just missed it.