Thats how i like to think about it. Imagine an apple the the left of a 1D being, the being would never be able to see the apple or know it exists. For the 2D being, we put the apple in a box, and the being would never be able to see whats inside of the box. For the 3D being, we close the box (or put the apple behind the box), and the being would never know whats inside (or behind) the box. And for the 4D being.... Idk, the being could just look through the box in the 3D difficulty, so idk what kinda impossibility they would have to face
Technically, if you use the glass box, and this is like super far fetched, but since glass is clear, you can't see any sides of the box bc they all clear
The way dimensions work is that you can see everything of a dimension with a lower number, comprehend nothing from a higher number, and make a full picture of your own dimension from viewing parts at a time. Pretty cool
Also, Our eyes register all objects as 2D. Depth is something we perceive from the difference in sizes and shadows/lighting levels. We literally cannot see anything in 3D.
We get our depth perception from our bioptic vision and parallax. Your two eyes see everything from a slightly different angle from each other; the difference between those angles is called parallax, and it depends on the distance to the object-your brain can figure out distance very well this way and it is its main way of doing so. You can see this working by putting your finger in front of your eys, you will see it twice unless you focus on it. When you focus on your finger that is just your eyes moving to the right angle and your brain figuring out the distance to the finger (if it didn't know how far the finger was it would be unable to find the right angle to give you a single image).
@@ichigo_nyanko does that mean 4th dimensional beings have more eyes at even more different angles kinda horrifying to imagine Also it can mean that the fourth dimension exists in our universe but we just can't see it which is even more horrifying to imagine Looks like we are gonna uncover the secrets of the 4th dimension in this comment section
@@user-pr6ed3ri2k you can step on a corner though, but that might still be a bit hard on your eyes trying to see everything through your peripheral vision (is that how it’s spelled?).
@@Burning_Marshmallow thats impossible, you would need 180 degree FOV to do that, and that is physically impossible because your eye would have to be a single point for all that light to hit it
Just like how 2D sight would hypothetically not allow us to see all four sides of a square (only two at a time, 3D sight only allows us to see three sides of a cube at most, whereas 4D sight would allow us to see all six sides. Fascinating.
We can only see 2 dimensional. That’s also why we can display our vision onto computer monitors. Because it’s both 2D. If we could see 3D. We wouldn’t be able to naturally comprehend a 2D Monitor.
Similarly, two dimentional beings cannot see all sides of a square at once. They would have to make the square into a flat line in order to see everything at once.
I see a flaw in this description. It’s not just that a 4D creature can see all faces of a cube, they can see the entire cube, inside and out. Just like how we can see both the sides of a square and the inside.
This is why psychology is important. The chapter on perception blew my mind. Our mind also has a way of completing things that aren't complete or rearranging things to fit a schema.
basically you live in a 3d world but what you see is 2d pictures of everything with only width and height (x and y). a 2d creature can see only height, as width would be equal to 0 (x and y=0). a 4d creature can actually see x, y and z if you think about it
I remember having this exact conversation with my brother, he was debating that you can see 3d, I just kept explaining to him that this is just physically impossible, until he just realized that you gotta by 4 dimensional in order to see the entire shape
True. We 3D beings sees things in 2D. But we can move in a 3 dimensional space. Same thing can be applied to a 4D beings. They can see things in 3D but not in 4D.
As a 26th dimensional person, I can see coordinates of the X, Y, Z, and W axis. But, I can also see the V, U, T, S, R, Q, P, O, N, M, L, K, J, I, H, G, F, E, D, C, B, and A axises.
Now place an apple inside the box. You won't able to see the apple, yet a 4 dimensional point of veuw would let you see the apple, the numbers, the apple seeds.
Sounds like 4D has X-ray vision to see in a cube, like you see everything for what it is. Another example of "4D" is The Sims, even though you're in a "3D" world you can drop in objects and see inside the houses you create from a overhead perspective.
If you using 2D screen and you still can ajle to see 3D object like box "even you still can't see all side once". it must be you can see a 4D object on 3D screen This Is My Conspiration
We see in the dimension below us, a 1D being would see 0th dimension, or the essence of one unit, a 2D being would see the 1st dimension, and we 3D beings see the 2nd dimension, so it makes sense a 4D being would see like that.
This is completely true. That’s how a lot of optical illusions work, like when you see a Rubik’s cube on a table, but it’s actually a long sheet of paper with a Rubik’s cube design. We live in 3 dimensions, but we see in 2 dimensions
what is the most amount of sides you can see on a cube without any use of external objects such as mirrors? I found I could only see a maximum of 5 sides, by having only one face of the cube directed towards me, whilst on a 45-degree tilt. Because each eye was able to see the opposite sides of the cube individually I could see five of the six sides, like when you put a pane of glass between your eyes to see both sides.
We see in semi-3d due to having 2 eyes. That’s how we can detect depth and differ between something small and something far. Still interesting that we just work this way though
I've noticed something. If you are in a 3d World, you See 2D. If you are in a 2D World, you See 1D. If you are in a 1D world you See 0D, only one color.
I was thinking of this same 3D-4D theory lately and how a 4D being would be able to see through stuff and disappear in and out of this 3D world. Thinking on it now, I don't think a 4D being could exist in our 3D universe thesame way we can't live in/on paper. If you need more understanding on this principle, you can check out Action Lab's video on the 4th dimension.
You can see all sides of the box without a mirror or camera or breaking the box. All you gotta do is get near a black hole so the light from the back of the box will orbit the black hole and come back to you
Thats a reflection, kinda... The whole point is to see it with the problem of living in a 3D space. No reflections, no cameras, just you and your 3D body
@@TWplayer It's not a reflection. A reflection is the light bouncing off of the object, bouncing off of a different object, and then bouncing into your eyeballs. Like, if you put the box in front of a mirror, the light bounces off the box, then off the mm mirror, then into your eyes. If you got near a black hole and the light from the back of the box orbited the black hole to return to you, that light didn't bounce off anything else. It's not a reflection. You can literally see the whole box
@@ppppp524 but that is not the point of the problem, 4D beings can (in theory) see all sides and angles of objects as a normal thing, they wouldnt need to go near a black hole to do that. For them it should be like having cameras EVERYWHERE
@@TWplayer it never says no reflections, it only says no mirrors, also being 4D would not be like having cameras everywhere, its a lot more like how if you were to draw a square on a piece of paper you can see all four sides of it, you still have a limited amount you can view because if its big enough the ends become out of view
conjure a black hole and since light will curve around it place it in such a way that light hits the other sides allowing you to see at least a part of them.
You can see all sides of a 2-D square while a 2-D being could only see two sides, by unfolding the 2-D square they could see all four sides but they turned there 2-D object into a 1-D object. The same logic applies for all dimensions higher than 1
you could just with a mirror the reason we cannot actually fully see 3d shapes is that like a 2d person can see the area of a square we cannot see the volume of a cube
@@khyenwell it is the 4th but it is often kept separate from mathematical equations and models due to the extra useless variable which will throw a wrench in the works.
it's exactly for 2D also technically we are the 4th dimension while playing the sims for example because we can see bot the inside and the outside of a house at the same time
You can't see 6 sides at once without making it 2d, but you can see 5. If you look at it from the inside, you can see every face except the one right behind you
Well I think its like if you are 3D you will see 2D (from your eyes, you know what I mean), and if you are 4D you will see 3D and we don't know how something like that could happen because we are in 3D not in 4D. Im sorry if you don't understand because of my English sucks.
Technically 2d objects dont exist Bc they have to be so thin to have no width just to be classified as 2d So we we can see through 2d objects, and no mirrors arent included
A 2d person say that 3d obj doesn't exist because they can't see it We say that there is no 4d obj because we can't see it But maybe there is infinite dimensions
If put in like exactly front of you, you can see 5 sides. And these include the height, length and width- proving that you can see the 3 dimensions of the shape. Just take a tv Remote and the light at the front- look at it. As you have 2 eyes they can see the sides and top and bottom of this shape. A smaller shape is easier to see
That’s fascinating. So a 4-D person could see all sides of a 3-D shape somehow but couldn’t see all sides of a 4-D shape
Thats how i like to think about it. Imagine an apple the the left of a 1D being, the being would never be able to see the apple or know it exists. For the 2D being, we put the apple in a box, and the being would never be able to see whats inside of the box. For the 3D being, we close the box (or put the apple behind the box), and the being would never know whats inside (or behind) the box. And for the 4D being.... Idk, the being could just look through the box in the 3D difficulty, so idk what kinda impossibility they would have to face
I was thinking the same thing.
like you can see inside of a square but 2 dimensional things would only see a line not all the sides of the square
@@reizinhodojogo3956 exactly! Great point
Yess.. and just like 2d shape appear flat to us, a 3d shape would appear flat to 4 dimensional people
Yes, increase the box's gravity until the light from behind the box bends so heavily you can see the behind from the front.
Yeaa
how the fuck do black holes even work? 3d holes on a 3d paper?
@@lancer4947 le me - holes👀🌚
Genius
Interesting
Use a glass box. Problem solved. 4th dimension achieved.
Thug😎😂
Lol 🤣
Damn 🤣
Technically, if you use the glass box, and this is like super far fetched, but since glass is clear, you can't see any sides of the box bc they all clear
That’s what I’m saying
The way dimensions work is that you can see everything of a dimension with a lower number, comprehend nothing from a higher number, and make a full picture of your own dimension from viewing parts at a time. Pretty cool
Yeah, it’s cool
Also,
Our eyes register all objects as 2D.
Depth is something we perceive from the difference in sizes and shadows/lighting levels. We literally cannot see anything in 3D.
Thats is an interesting thought. With that logic, it should be the same with 4th dimensional beings, except, its 3D for them
We get our depth perception from our bioptic vision and parallax. Your two eyes see everything from a slightly different angle from each other; the difference between those angles is called parallax, and it depends on the distance to the object-your brain can figure out distance very well this way and it is its main way of doing so.
You can see this working by putting your finger in front of your eys, you will see it twice unless you focus on it. When you focus on your finger that is just your eyes moving to the right angle and your brain figuring out the distance to the finger (if it didn't know how far the finger was it would be unable to find the right angle to give you a single image).
@@TWplayer no, this is about our eyes and our brain.
I came up with this theory some time ago, I watched a movie and realized I couldnt tell the difference between that and real life in visuals alone
@@ichigo_nyanko does that mean 4th dimensional beings have more eyes at even more different angles kinda horrifying to imagine
Also it can mean that the fourth dimension exists in our universe but we just can't see it which is even more horrifying to imagine
Looks like we are gonna uncover the secrets of the 4th dimension in this comment section
"do you know how to see all six sides at once?
My stupid ass: become a 4d being
me who goes inside the box: *my goals are beyond your understanding*
I would get a second box. But yours is 200 iq more than my idea.
Now you cant see the outside
@@alol1725and you cant see the face that is on your back so max is now 5
@@user-pr6ed3ri2k you can step on a corner though, but that might still be a bit hard on your eyes trying to see everything through your peripheral vision (is that how it’s spelled?).
@@Burning_Marshmallow thats impossible, you would need 180 degree FOV to do that, and that is physically impossible because your eye would have to be a single point for all that light to hit it
I always picture these theories with a human instead of a cube or box.....it gets crazy.
Today i won't sleep again
Hold up
Random fact:
You could actually see the back of a neutron star because its magnetic field is so powerful in makes the light go around it
Can you use the gravity of a black hole to warp space in such a way to see all sides?
Also yeah we see in 2D, we perceive 3D with context clues.
I had the same idea
Finally someone talking about this. People seem to forget about that
Nobody forgot about since nobody heard of it
I had forgot about this concept for a while but I just happened to remember it again during a conversation with my friends and then this video pops up
You explained the basics of topology, nice
Bold of you to assume I'm currently in the third dimension
yes besides the cool dimensional stuff, my eyes are burning watching this at 11pm with my lights off in bed
Just like how 2D sight would hypothetically not allow us to see all four sides of a square (only two at a time, 3D sight only allows us to see three sides of a cube at most, whereas 4D sight would allow us to see all six sides. Fascinating.
We can only see 2 dimensional. That’s also why we can display our vision onto computer monitors. Because it’s both 2D. If we could see 3D. We wouldn’t be able to naturally comprehend a 2D Monitor.
We can comprehend 1D but we don’t see 1D
me : *transforms into 4th dimesional creature*
Similarly, two dimentional beings cannot see all sides of a square at once. They would have to make the square into a flat line in order to see everything at once.
A 2d person sees 1 dimension, a 3D person sees 2 dimensions, and a 4d person sees 3 dimensions.
I see a flaw in this description. It’s not just that a 4D creature can see all faces of a cube, they can see the entire cube, inside and out. Just like how we can see both the sides of a square and the inside.
it doesn't turn 2d when you unfold it, it still has the slightest of depth 👍
btw, what if the cube isn't hollow 🤔🤔
This is why psychology is important. The chapter on perception blew my mind. Our mind also has a way of completing things that aren't complete or rearranging things to fit a schema.
basically you live in a 3d world but what you see is 2d pictures of everything with only width and height (x and y). a 2d creature can see only height, as width would be equal to 0 (x and y=0). a 4d creature can actually see x, y and z if you think about it
So that means my little styckman on my homework thinks that the presentation line is somehow an holy great red wall
Just like how a 2D person can only have 1D vision and kinda sees 1 line
“You will be able to see all six sides at once.”
The back: “Am I a joke to you?”
The back doesnt qualify as a different side
And if you say “its a joke” its a shit joke
@@SnaiIer if you woosh this guy, you are not doing it right
@@SnaiIer I really don’t care
What back?
We still cannot see what is written on the outside faces and inside faces at the same time when we flatten it. We still needs to rotate
My 4D friend approves
Or you could angle mirrors behind the box and there you go, you can see all sides of a 3-D object
If the box has a gravitational pull similar to a black hole light would curve around in a way that you could see every side at once.
Not being able to see the other side of the box does not mean we cannot see 3D shapes.
I remember having this exact conversation with my brother, he was debating that you can see 3d, I just kept explaining to him that this is just physically impossible, until he just realized that you gotta by 4 dimensional in order to see the entire shape
I've always innately understood this. We're just combining two different two-dimensional images to achieve a feeling of three dimensions.
Mirrors: I'mma bout to end this man's whole career
it says no mirrors are you blind AND deaf?
True. We 3D beings sees things in 2D. But we can move in a 3 dimensional space. Same thing can be applied to a 4D beings. They can see things in 3D but not in 4D.
I wonder what it means to “see” in 3D. How many eyes would they need?
@@MaxOakland you would probobly only need 2, but they would need to be 4D eyeballs with 3D retinas.
As a 26th dimensional person, I can see coordinates of the X, Y, Z, and W axis. But, I can also see the V, U, T, S, R, Q, P, O, N, M, L, K, J, I, H, G, F, E, D, C, B, and A axises.
Now place an apple inside the box. You won't able to see the apple, yet a 4 dimensional point of veuw would let you see the apple, the numbers, the apple seeds.
This also means that if we ended up in a 2D world we could see through their walls and know the dimensions of them
If you put the box between your eyes theoretically you could see both sides but just not very clearly
4th Dimensional People Trying to See anything Other Than Their Phone's Back :
If you look at a 3D trapezoid from the top you can see 5 sides.
Sounds like 4D has X-ray vision to see in a cube, like you see everything for what it is. Another example of "4D" is The Sims, even though you're in a "3D" world you can drop in objects and see inside the houses you create from a overhead perspective.
If you using 2D screen and you still can ajle to see 3D object like box "even you still can't see all side once". it must be you can see a 4D object on 3D screen
This Is My Conspiration
Make a glass box and now it is transparent we are able to all sides at once
We see in the dimension below us, a 1D being would see 0th dimension, or the essence of one unit, a 2D being would see the 1st dimension, and we 3D beings see the 2nd dimension, so it makes sense a 4D being would see like that.
Brooo take a transparent 3D object and see all it's sides
Use mirrors
That's how the world map was invented
Make it from glass.
Well actually it didn't change in 2d cuz the material used still has some thickness , so we can't change the dimensions in any case
This is completely true. That’s how a lot of optical illusions work, like when you see a Rubik’s cube on a table, but it’s actually a long sheet of paper with a Rubik’s cube design. We live in 3 dimensions, but we see in 2 dimensions
what is the most amount of sides you can see on a cube without any use of external objects such as mirrors? I found I could only see a maximum of 5 sides, by having only one face of the cube directed towards me, whilst on a 45-degree tilt. Because each eye was able to see the opposite sides of the cube individually I could see five of the six sides, like when you put a pane of glass between your eyes to see both sides.
We see in semi-3d due to having 2 eyes. That’s how we can detect depth and differ between something small and something far. Still interesting that we just work this way though
So basically make it transparent
exactly. A 2D person can also only see in 1D since there is no depth that would be the horizontal view.
so basically we had to use the passage of another dimension, time, to "rotate" the box and visualize it from all sides?
2.5D
That's because your eyes are positioned on one side of your head. This means you can only see something from one direction (axis)
Another thing people dont think of is that we cant see 1st dimensional objects bc the width is infinitly small
Me using a glass box to see all of the sides: I'm 4 parallel universes ahead of you! (You can see all sides of a 3d shape in the 4th dimension)
This is interesting.
So basically, a 4D being would look at a cube and see something like a tesseract
I've noticed something. If you are in a 3d World, you See 2D. If you are in a 2D World, you See 1D. If you are in a 1D world you See 0D, only one color.
Dude even four dimensional people can’t completely see four dimensional shapes! There’s no way we are gonna see.
I was thinking of this same 3D-4D theory lately and how a 4D being would be able to see through stuff and disappear in and out of this 3D world.
Thinking on it now, I don't think a 4D being could exist in our 3D universe thesame way we can't live in/on paper.
If you need more understanding on this principle, you can check out Action Lab's video on the 4th dimension.
You can see all sides of the box without a mirror or camera or breaking the box. All you gotta do is get near a black hole so the light from the back of the box will orbit the black hole and come back to you
Thats a reflection, kinda... The whole point is to see it with the problem of living in a 3D space. No reflections, no cameras, just you and your 3D body
@@TWplayer It's not a reflection. A reflection is the light bouncing off of the object, bouncing off of a different object, and then bouncing into your eyeballs. Like, if you put the box in front of a mirror, the light bounces off the box, then off the mm mirror, then into your eyes. If you got near a black hole and the light from the back of the box orbited the black hole to return to you, that light didn't bounce off anything else. It's not a reflection. You can literally see the whole box
@@ppppp524 but that is not the point of the problem, 4D beings can (in theory) see all sides and angles of objects as a normal thing, they wouldnt need to go near a black hole to do that. For them it should be like having cameras EVERYWHERE
The light would travel around the black hole but then hit the back of your head, and you wouldnt be able to see it
@@TWplayer it never says no reflections, it only says no mirrors, also being 4D would not be like having cameras everywhere, its a lot more like how if you were to draw a square on a piece of paper you can see all four sides of it, you still have a limited amount you can view because if its big enough the ends become out of view
Our eyes actually perceive the world in 2D.
conjure a black hole and since light will curve around it place it in such a way that light hits the other sides allowing you to see at least a part of them.
You can see all sides of a 2-D square while a 2-D being could only see two sides, by unfolding the 2-D square they could see all four sides but they turned there 2-D object into a 1-D object. The same logic applies for all dimensions higher than 1
you could just with a mirror the reason we cannot actually fully see 3d shapes is that like a 2d person can see the area of a square we cannot see the volume of a cube
The most you could see would be 5 sides without going inside, using gravity, mirrors and camera (if the box is smaller then the height of your eye)
We live in 4 detentions (length, width, height, and time)
Time is not an official dimension
@@khyenwell it is the 4th but it is often kept separate from mathematical equations and models due to the extra useless variable which will throw a wrench in the works.
it's exactly for 2D
also technically
we are the 4th dimension while playing the sims for example
because we can see bot the inside and the outside of a house
at the same time
spin in insanely fast on an axis and you will see all sides at once
You can't see 6 sides at once without making it 2d, but you can see 5. If you look at it from the inside, you can see every face except the one right behind you
I can see all six sides without having to make any change or even touch the cube?
how?
my cube is translucent.
Well I think its like if you are 3D you will see 2D (from your eyes, you know what I mean), and if you are 4D you will see 3D and we don't know how something like that could happen because we are in 3D not in 4D. Im sorry if you don't understand because of my English sucks.
Yes profeI worked w/ sheet metal,believe me is just like that ,not only academics,but your intuition!
if you spin it fast enough by opposite corners, the sides will overlap in our brain's processing and boom 3d representation of the 4th dimension
Apparently the 4th dimension is actually tome itself which doesn't make any sense
Bro rlly turned the box into a crucifix-
A Cross u mean
@@cubebutpro298 y e s
Excuse me ? I still can’t see the back side of the 2D object you just made!
or just put a camera on the back of the box and see all 6 sides like that
Use a box made of glass
Me: A cube made of glass
Technically
2d objects dont exist
Bc they have to be so thin to have no width just to be classified as 2d
So we we can see through 2d objects, and no mirrors arent included
1d doesnt exist to 1d people
A 2d person say that 3d obj doesn't exist because they can't see it
We say that there is no 4d obj because we can't see it
But maybe there is infinite dimensions
This man’s voice is in the fourth dimension
Use a transparent box or a mirror
if you are inside the box (at the center), you can see 5 sides if you look at the center of one of the sides
You can if you are approaching the object at a speed close to speed of light :)
guys I’m a genius;
Make the front of the cube clear so that you can look inside of it, thus being able to see all sides.
If the box is of glas you can see all sides
Now for the second question: How does one see three dimensions?
Anybody's watching this from 4D or is it just me?
As a 4-D being I can confirm it works in my dimension too
If put in like exactly front of you, you can see 5 sides. And these include the height, length and width- proving that you can see the 3 dimensions of the shape. Just take a tv Remote and the light at the front- look at it. As you have 2 eyes they can see the sides and top and bottom of this shape. A smaller shape is easier to see
We can. From a little distance, a slanted perspective and with some bright light, you can see the box's six sides
You can see all dimensions from within the box. Like sitting in your room that has 4 walls a ceiling and floor.
Einstein has already proven that we live in a fourth dimension in that fourth dimension is time
Makes sense because if a 2D person was looking at a 2D shape they would only see a line but we (3d ) see the entire shape
great demonstration of using manifolds for our 2 dimensional vision