The basic overall concept for the idea of the fourth-dimensional theory is based on the concept of extra-spatial dimensions. The understanding of the theory is based on the conceptual idea of spacial occupation and movement. It is understood that humans can move and see in three dimensions: that is length,heighth, and depth, which, for this example, will be respectively known as X, Y, and Z.

In The case of doing Jiu Jitsu in the fourth dimension , one is capable of moving in X, Y, and Z, and in an undefined and unknown variable simply known as the mathematical variable "n" (to denote a lack of understanding of the required mathematical proof).

To explain this example, a hypothetical situation will be used in the idea of an indivdual forced to move in the second dimension is attempting to escape or capture a being moving in three dimensions.

Due to the second dimension being X and Y, the third-dimensional individual has an advantage in being able to move in Z.

Since the second-dimension individual is incapable of moving or utilizing the Z coordinate in his own plane, the third-dimensional individual does, therefore, have a distinct and serious advantage in both evading and capturing the second-dimensional individual.

It would also make the third-dimensional individual appear to vanish when moving in Z until they were once again directly in sync with the second dimensions location on the third dimension.

It is also important to note that the second-dimensional individual can move in Z, but does not know how to as this individual cannot comprehend it.

Now, it is extremely important to note that humans do not exist separate from the fourth dimension, but rather congruently with it, but are otherwise incapable of recognizing nor explaining it. While humans do regularly interact with "n", all one can physically perceive is X, Y, and Z.

The idea in this theory is that When one knows Jiu Jitsu from this perspective one is actually fully capable of seeing and freely utilizing "n" of the fourth dimension to his advantage. However, it works (as this is all theoretical along with all other concepts), it gives Your Jiu Jitsu the appearance of "teleporting" (which is the ability to move from one location in space/time to another in space/time without going backwards in time and doing so instantaneously).

This would mean, in layman's terms, that your Jiu Jitsu isn’t teleporting whatsoever, but simply one is able to move and walk in ways we cannot understand, and since humans understand movement in X, Y, and Z, but cannot perceive, and therefore, take advantage of "n", your Jiu Jitsu has a distinct and serious advantage over others.

Now, since it is not factually understood, That your Jiu Jitsu could be utilizing the Fifth Dimension, Sixth, Seventh, or so forth, but it is simply assumed to be the Fourth as we cannot perceive properly yet.

It is important to note that while a Fourth Dimension does theoretically exist in time, it is not a spatial dimension, but rather a temporal dimension, and therefore this example is not Your Jiu Jitsu moving through time.

This is an excerpt from a slender man fan theory which I believe correlates extremely well with what is described as invisible Jiu Jitsu from master Rickson Gracie and then interpreted through Hidden Jiu Jitsu with professor Henry Akins. There are aspects to Jiu Jitsu that when understood can take your self defense game to a whole other dimension. I believe in Jiu jitsu for self defense. The Gracie family has helped shape the idea of self defense as the central pillar of their Jiu jitsu and as Rener Gracie says it’s more rational to fight fire with water than with fire with Jiu jitsu from master Ricksons you will be doing exactly that.