You appear to be a bright young man still having all senses intact. Unless you are Einstein or newton , avoid delving into universe and its mysteries. You may get cranky at any point of time. Humans simply dont have brain power created by Almighty to understand Universe. We are just there , a biologicals entity born out of a dna. Be happy with 3+1 dimensions which we can see and feel. And it is enough for science and its growth. Just imagine we keep all molecules and element s in human body including material of genes in a tube, will they combine and become life. NO. Hence humans cant solve mystery of life and death and beoynd and universe. You have to do meditation and go way of our ancient sages to transcend into unknown.

Any way I try to explain your question metaphorically, which would be easily understood. : I hope I am but successful

The Universe as a Tapestry: A Metaphor for Dimensions and Stability

Imagine the universe is a giant cosmic tapestry—a beautiful, woven fabric hanging in a gallery.

Each thread represents a dimension:

3 big, bold horizontal threads: length, width, height (our spatial dimensions).

1 shimmering golden thread: time.

6 fine, hidden threads: extra spatial dimensions, curled up and woven so tightly you can’t see them unless you zoom in to the microscopic weave.

1 mystical thread: the 11th, which holds the whole weave together like an underlying loom structure (the realm of M-theory).

Now this tapestry must be just right—the threads need perfect tension and structure to hang properly and be visible.

Dimensions < 10: The “Loose-Weave Problem”

If you only use a few threads (say 3-6), the tapestry:

Sags

Has holes

Can’t support patterns (particles, forces, galaxies)

This is like string theory with too few dimensions—it can't support consistent physics. The fabric of reality tears or becomes meaningless.

Dimensions = 10: Superstring Sweet Spot

At exactly 10 dimensions (9 spatial + 1 time), the weave becomes tight, balanced, and resonant.

Strings (particles) can vibrate harmoniously. The tapestry:

Has symmetry

Is strong and colorful

Can hold shapes (matter), currents (forces), and patterns (life)

But there’s still something deeper—a loom behind it all.

Dimension 11: The Hidden Loom of M-Theory

M-theory adds one extra thread—not in the weave, but in the frame holding the tapestry.

This 11th dimension allows:

Branes (higher-dimensional sheets) to stretch across it

Membranes to move and collide (cosmic evolution)

All the 10D string theories to make sense as perspectives of a single structure

The universe becomes not just a tapestry but a whole weaving room—alive, multi-layered, dynamic.

Dimensions > 11: The Collapse of the Loom

Now imagine adding more threads—13, 20, 50 dimensions.

The loom collapses under complexity

Threads start overlapping chaotically

Patterns unravel

The tension breaks, and the fabric falls apart

In metaphorical terms, physics loses grip on reality:

No stable patterns (particles) can exist

The tapestry doesn’t hang—it’s just a tangle of nonsense

Time becomes disoriented; cause and effect break down

That’s why the universe “feels unstable” or incomprehensible beyond 11D.

Summary of the Metaphor:

Dimension Tapestry Metaphor Stability

11 Collapsed loom Physically Unstable