All 7 Dimensions Explained in Detail (From 0D to Infini… — Transcript

Only one dimension has vanished from reality: depth. Your body has become absolutely flat. You can't turn around, and your blood has stopped flowing because your veins no longer have volume. But these are minor details compared to what awaits you in the fourth, fifth, and seventh dimensions. Today, we'll drag your body from the zeroth dimension to the seventh, where the human brain simply shuts down.

fourth, [music] fifth and seventh dimensions. Today, we'll drag your body from the zeroth dimension to the seventh, where the human brain simply shuts down.

One important note before we go further: the higher we climb, the more we'll use dimensions as a metaphor to visualize levels of reality that we cannot see directly. But first, the basics. What exactly is a dimension? Forget about portals and magical realms.

In the simplest sense, a dimension is [music] an independent direction or a degree of freedom used to define an object's position. [music] Rene Descartes gave us a convenient language for this in the 17th century through the coordinate system. When we

In the simplest sense, a dimension is an independent direction or a degree of freedom used to define an object's position. Rene Descartes gave us a convenient language for this in the 17th century through the coordinate system. When we fall to the very bottom into the zeroth dimension, you have exactly zero directions to move. If we forcefully squeeze a body into the zeroth dimension, no shape remains, only a coordinate, a mathematical point with no size. In such a world, there's no space to move, and the very idea of moving loses its meaning.

no space to move and the very idea of moving loses its meaning. [music] Absolute claustrophobia. You seemingly exist, but to the rest of the universe, you simply don't exist. [music] Let's take a step up to the first dimension. We are granted exactly

Absolute claustrophobia. You seemingly exist, but to the rest of the universe, you simply don't exist. Let's take a step up to the first dimension. We are granted exactly one degree of freedom. You become an infinitely thin line. Now you have length, and you can only move forward or backward, and that's it. You can't turn around or bypass an obstacle.

front of you, you are simply stuck forever. The concepts of up or sideways [music] simply don't exist here. You aren't just stuck on a line. You have become a creature for whom any obstacle is the end of [music] the universe.

If someone else appears on this axis in front of you, you are simply stuck forever. The concepts of up or sideways simply don't exist here. You aren't just stuck on a line. You have become a creature for whom any obstacle is the end of the universe.

[music] You now have length and width. Your entire world looks like a drawing on a piece of paper. [music] But the most interesting part here is how you perceive this world. In 1884, mathematician Edwin A. Abbott gave us a

We take this line and stretch it at a 90° angle. Welcome to the second dimension, the plane.

they won't see a circle. Imagine putting your right eye at the level of a table surface and looking at a coin lying flat from the side. You won't see a round shape. You will see merely a flat [music] horizontal line. In a flat

You now have length and width. Your entire world looks like a drawing on a piece of paper. But the most interesting part here is how you perceive this world. In 1884, mathematician Edwin A. Abbott gave us a useful way to picture this. For simplicity's sake, remember this main rule: a creature usually perceives the world through projections and cross-sections one dimension lower than itself. If a 2D character on paper looks at a drawn circle, they won't see a circle. Imagine putting your right eye at the level of a table surface and looking at a coin lying flat from the side. You won't see a round shape. You will see merely a flat horizontal line. In a flat world, absolutely everything looks like line segments of varying lengths.

shape. If this [music] 2D character draws a square house around itself, it will be absolutely safe from other flat beings.

To understand that what lies ahead is indeed a circle and not a square, a flat creature would have to physically walk around its perimeter. Only then could it understand the object's true shape. If this 2D character draws a square house around itself, it will be absolutely safe from other flat beings.

a finger from our third dimension and touch the character without breaking the walls. Your house might be a fortress against your neighbors, but it's an open box to a being from above.

To them, it has disappeared behind a wall. But we, beings from a 3D world, look at this piece of paper from above. We see everything simultaneously, the walls of the flat house and the character inside it. We can simply lower a finger from our third dimension and touch the character without breaking the walls. Your house might be a fortress against your neighbors, but it's an open box to a being from above.

drastically that stable planetary orbits and atoms would become impossible. [music] Here, depth appears, but due to that very rule of vision, we live in a total illusion. Strictly speaking, our eyes do not receive a ready-made 3D picture. A

Keep this paradox in mind. We'll need it shortly. Let's pull this plane upward at a 90° angle. Enter our cozy three-dimensional world. Physicist Paul Ehrenfest demonstrated that if there were more than three spatial dimensions, the familiar laws of gravity would change so drastically that stable planetary orbits and atoms would become impossible.

behind it until you walk around it. In a 3D world, we only see the outer shells of things. To see the inside, we must break the shape.

Here, depth appears, but due to that very rule of vision, we live in a total illusion. Strictly speaking, our eyes do not receive a ready-made 3D picture. A flat 2D image falls onto the retina, and the brain reconstructs the sensation of depth using cues, the disparity between our eyes, perspective, and shadows. You see a closed safe, but you don't see what's inside. Look at your monitor. You can't see what's behind it until you walk around it. In a 3D world, we only see the outer shells of things. To see the inside, we must break the shape.

Hermann Minkowski proposed viewing space and time as a single unified structure. In 4D, time ceases to be [music] an abstract flow. The easiest way to grasp this is through the timeline in video editing software. The viewer watches the

And now, let's step into the fourth dimension. We add another coordinate independent of the three spatial ones. We can't display it on a screen as a normal direction, but in physics, time often plays the role of this coordinate. In 1908, Hermann Minkowski proposed viewing space and time as a single unified structure. In 4D, time ceases to be an abstract flow. The easiest way to grasp this is through the timeline in video editing software. The viewer watches the video frame by frame, while the creator sees the whole strip of the video laid out on the screen at once. A 4D being looks at our three-dimensional universe exactly the same way we looked at that flat piece of paper. It sees everything all at once.

everything all at once. [music] If a 4D being could interact with different segments of time, it doesn't need to break open the safe today.

If a 4D being could interact with different segments of time, it doesn't need to break open the safe today. It simply reaches back to the moment yesterday when the door was open. To you, trapped in the now, the object will simply vanish from the locked safe. So, what happens to your body? You're no longer a human living life second by second.

life second by second. [music] Since time is now a physical direction, your body is permanently stretched along it.

Since time is now a physical direction, your body is permanently stretched along it. Imagine a giant continuous space-time worm made up of millions of your copies. At one end of this structure is a baby being born. Further along this long body rise through space, here it is walking to school, here it is sitting on a chair right now, and finally it ends as an old person taking their last breath.

a chair right now, and finally it ends as an old person taking [music] their last breath.

In 4D, there's no past or future. There is no movement. There's only this giant frozen monolith of your life from beginning to end. To a four-dimensional being, your life is not a story; it is an object. But the 4D monolith is just one rigidly fixed line. Let's take a step into the fifth dimension. And here we transition from strict geometry into a convenient pop sci metaphor.

just one rigidly fixed line. Let's take a step into the fifth dimension. And here we transition from strict geometry into a convenient pop sci metaphor.

What could the next direction be after time? Possibility. The axis of alternative outcomes. In quantum mechanics, this is Hugh Everett's many-worlds interpretation.

[music] In 4D, you had only one destiny. But if we imagine every event and every choice [music] as a crossroads, then in the fifth dimension, your temporal worm splits in two at the moment of every outcome, [music] then again and again. Your body in 5D

In 4D, you had only one destiny. But if we imagine every event and every choice as a crossroads, then in the fifth dimension, your temporal worm splits in two at the moment of every outcome, then again and again. Your body in 5D turns into a colossal infinitely branching fractal. A massive tree, as it were. A perfect example of how this feels is the video game The Alters, where every new clone at the base is you having taken an alternate branch. For the massive narrative flowcharts in games like Detroit: Become Human. Here the branch where you become a millionaire, the branch where you're never born at all, and the branch where you're watching this video right now all exist simultaneously.

branch. For the massive narrative flowcharts in games like Detroit: Become Human. Here the branch where you become a millionaire, the branch where you're never born at all, and the branch where you're watching this video right now all exist simultaneously.

For a five-dimensional being, there's no concept of fate or inevitability. It sees this entire fractal of your lives as a single whole. You're no longer one person; you're an entire forest of all the people you could have become.

Moreover, to it, these alternate realities are not separate worlds, they're simply different directions in space. But even this infinite fractal of lives is constrained by the laws of our physics. So, we collapse [music] your entire giant tree of probabilities back

Moreover, to it, these alternate realities are not separate worlds; they're simply different directions in space. But even this infinite fractal of lives is constrained by the laws of our physics. So, we collapse your entire giant tree of probabilities back into a single point and pull another perpendicular axis out of it. Welcome to the sixth dimension.

In some versions of string theory, entire landscapes of possible universes emerge. For this video, we can picture it as the [music] next level. No longer different destinies within the same physics, but entirely different physics altogether.

In some versions of string theory, entire landscapes of possible universes emerge. For this video, we can pictur

body is only possible where the right laws exist, such as the right chemistry, stable bonds, and enough time for processes to unfold. [music] In the sixth dimension, nothing is left of your body. You're no longer human.

You're no longer a branching worm. You become pure information, an abstract mathematical structure that links the concept of your existence across all possible variants of physical laws.

To reach the seventh dimension, we take this entire infinite network of 60 universes with different laws of physics, collapse it into a single point, and we stop.

The seventh [music] dimension in this scenario is no longer a specific physical axis, but a final metaphor, the space of all logically possible realities. Let me say that again. The space of all logical possible realities.

In the seventh dimension, the very concept of existence [music] or an event loses its meaning. This space contains absolutely everything simultaneously.

All possible variants of universes, all [music] conceivable and inconceivable laws of physics, all timelines from the beginning to the end [music] of time.

There is no action here. Action requires change and change requires familiar time. But in 7D, nothing is created How you doing?

You know what? I'm in the middle of recording. Can I call you back in a few minutes?

Okay bye. But in 7D, nothing is created and nothing disappears because everything that could logically exist is already permanently locked into this structure.

It's not a process. It's an absolute infinite frozen map of everything. It's not just a library of books. It is a library of all possible alphabets, all languages, all stories, and all laws by which those stories could be written.

So, why don't we go further? [music] Because at this stage, human logic reaches its limit. The mathematics of string theory allow us to calculate the eighth, tenth, and eleventh dimensions, but there these axes represent microscopic curled up spaces. Describing

them in macroscopic terms is physically impossible. Our brains [music] evolved to hide from predators in a three-dimensional world, not to comprehend absolute infinity.

So, let's come back. Exhale and look around. The walls of your room are solid again. Your time moves only forward, and everything inside the closed safe or behind your [music] back remains a mystery to you because you only see the flat 2D shell of things. We

live in a very narrow, limited, but perfectly balanced geometric incubator. [music] Enjoy this 3D illusion. And before your temporal worm reaches its end, subscribe to the channel.

[music] See you next time.