We all are familiar with the theories of the universe being higher dimensional I assume. There has never been any proof of this, bit I'm going to go ahead and add another probability level to them being true by explaining them with simple logic. But first, I'm gonna 'prove' something else which leads to this point.
Let's start with the 3 dimensions we know of. Width, height and depth. We are able to see all of these dimensions, and that has led people to assume that this world is 3-dimensional, and we living here also are 3-dimensional. And this is a valid assumption... except that it logically doesn't make sense. Why? Well let me explain. When looking at a 2-dimensional square (although nothing in this world is truly 2-dimensional, and remember this for later). What we see are the two dimensions, the width and depth of said square. However, keep in mind where we're looking at it from! That's right. Our viewpoint is actually the third dimension, height! What does this say?
Well for one to be able to discern that what they're truly looking at is 2-dimensional, one must see it from the 3rd dimension. Otherwise, without the third dimension all you'd see are one-dimensional lines, since you cannot look at it from above. And that brings me to us humans. We see the world as 3-dimensional. We can discern height and width, as well as height. But to be able to see height we must technically be looking at a dimension that's outside of height no? Let's compare it to something else:
You're in a car. Your viewpoint is from the car, but what you see is not the car but a bike outside your windscreen. You then conclude that the car doesn't exist, since you can't see it. But what you actually do is to see from it. To actually see the car you'd have to go inside of a truck. You'd the conclude that the car is the highest form, but you're actually looking at it from a higher form, the truck. And this goes on and on. Dimensions work the same way. The reason why we can't see the 4th dimension itself is because we're seeing from it, and to see the 4th dimension as we see the third would require you to exist on the 5th dimension. However the 4th dimension has to exist, because we're actually seeing everything from it. Which means that we humans never were 3-dimensional beings, but have always been 4-dimensional.
And now I come back to what I briefly mentioned, the point that something 2d cannot exist in a 3d world. If you look around you what you see are just 3d objects. You might argue that a paper is 2-dimensional, but it still has a tiny bit of height. Nothing can truly be 2-dimensional. This proves that were the world to consist of several more dimensions than we see, it still wouldn't matter since we actually interact with them daily. In other words, every object, including your own body has more dimensions than 3. They might just as well have infinite dimensions, and it wouldn't matter one bit. You can only see 3 of them because your brain is not advanced enough to handle more, which then made you gain eyes being able only to discern 3 dimensions during the evolutionary stages. An ant for example can only see two, because of evolving eyes that only can see two thanks to it's brain capacity. but it still sees everything from the 3rd dimension, making it a 3-dimensional being.
In short the physical mass is not what determines what dimension a being exists in, since that could be infinite as stated earlier, but it's the mental capacity of said being. Which means that were a 'higher dimensional being' interact with us it wouldn't be infinite times powerful as people state, but would instead just have a wider perspective on the world.
That being said, this is just a thesis and will probably never be more. Thanks for reading, and feedback would be appriciated.