Physics normally begins with a space that already has dimensions.
A position can be described by (x,y,z), or an event in spacetime by (t,x,y,z), and some physical theories work mathematically with an even greater number of dimensions.
But here I want to ask a different question:
Why does the universe have dimensions?
I am not yet asking why it has three spatial dimensions, nor whether a fourth, a fifth, or compactified dimensions might exist.
The question is more basic.
Why should dimensionality exist in the first place?
To think about this through Omudio, I try to remove even space from the explanation.
Suppose there are only two states: A and B.
If there is no physical difference between them, then writing A ≠ B distinguishes them only in our description.
But if there is a difference between them that can be preserved, interact, or produce some consequence, then that difference already has physical content.
I do not yet need to call it distance.
I do not need to say that A is here and B is there.
I do not even need to place them inside a space.
I only need a difference to exist.
Now suppose another form of difference appears that cannot be reduced to the first.
And then another.
D₁, D₂, D₃, …, Dₙ
I am not saying that these differences are dimensions.
What interests me is precisely the question of when a physical independence could acquire dimensional meaning.
In mathematics, a dimension represents an independent degree. If a variation in y cannot be described solely through changes in x, then another coordinate is required.
But here I want to reverse the order.
Instead of beginning with x, y, z and accepting that dimensions already exist, I want to begin with independent differences and ask what would have to happen for some of them to begin behaving as dimensions.
From this comes a provisional idea:
dimension ∼ independent degree of physical differentiation
I do not propose this as a physical definition of dimension or as a demonstrated conclusion of Omudio.
It is simply a different way of posing the problem.
This also changes the way I can look at a fourth spatial dimension.
Normally we write (x,y,z,w) and ask where w is.
But another question could come first:
What would have to exist physically for w to be interpreted as a dimension rather than simply as another property of the system?
Here there is an interesting connection with ideas that already exist in physics.
In Kaluza–Klein models, for example, an additional compactified dimension can manifest, from a lower-dimensional description, through properties of the observed states.
This does not demonstrate Omudio, nor does it mean that the known properties of particles are hidden dimensions.
What interests me in that example is that something described as geometry from a higher-dimensional framework can appear as a property from a lower-dimensional one.
So I can formulate another question:
Could the difference between a ‘property’ and a ‘dimension’ depend on the level from which reality is described?
If I follow this idea, I also do not want to begin by asking whether the universe has four, ten, or eleven dimensions.
I want to go a little further back.
Can a difference exist?
Can it be preserved?
Can several independent differences exist?
Can they relate to one another?
Can a structure formed by those relations acquire what we later recognize as geometry?
The path I imagine would be:
differentiation → preservation → relations → structure → geometry → dimensionality
This leads to a possibility that I want to explore:
dimensions could be a consequence, not the container.
If different primitive degrees of differentiation existed, there would be no need to call them dimensions from the beginning.
They could simply exist as D₁, D₂, …, Dₙ.
The question would be whether certain relations among them could produce a structure that later behaves as space.
It is even possible to imagine, only conceptually:
N primitive degrees → 3 macroscopic spatial dimensions + other internal degrees
I am not claiming that this occurs in nature.
I do not yet have a mechanism that produces three dimensions, nor an Omudio equation that derives them.
For that reason, this idea cannot be presented as a conclusion.
What it does is change the question.
Instead of asking only why there are three spatial dimensions rather than four, I can ask what physical conditions would cause certain degrees of independence to manifest as macroscopic space.
This also brings me back to the original question about time.
The initial doubt of Omudio was whether it makes sense to place time before the physical processes that allow a history to be distinguished.
Now I can ask a similar question about space:
Does it make sense to place space before the relations that allow separation to be distinguished?
And then about dimensions:
Does it make sense to place dimensionality before whatever allows independent differences to exist?
Perhaps these questions are pointing toward a common problem.
I can try to begin only with:
difference → preservation → relation
and ask what can appear afterward.
Perhaps separation, geometry, dimensionality, and history can acquire meaning from more complex structures.
I am not claiming that this necessarily happens.
The question is precisely whether it can happen.
For me, the problem therefore reaches something much more basic:
What is the minimum that must exist before it makes sense to speak of a dimensional universe?
And finally:
Why does the universe have dimensions?
For now, I do not have a mathematical answer.
I think inventing an equation merely to close the idea would introduce too early what I am still trying to understand.
First, it would be necessary to define precisely what an independently preservable difference means without using space, distance, coordinates, or time in advance.
Only then would it make sense to try to translate the question into mathematics:
Under what conditions can a set of independent differences and relations acquire a metric, a geometry, and an effective number of dimensions?
That is where this part of the thought remains open.