HenryAlSirat

All I can hear is Eddie Murphy from Delirious saying "How dare you make fun of Stevie Wonder!! Stevie's a god damn musical genius!"

I think I get what you're asking. As a weird explanation by means of an analogy, a hypothetical conversation might go like this:

Person A: What are we made of?

Person B: Cells.

Person A: What are cells made of?

Person B: Molecules.

Person A: What are molecules made of?

Person B: Atoms.

Person A: What are atoms made of?

Person B: Protons, neutrons, and electrons.

Person A: What are protons and neutrons made of?

Person B: Quarks

Person A: What are quarks made of?

Person B: Nothing we know about yet. They are known as elementary particles and cannot be subdivided any further.

The point of this analogous example is that at some level of any hierarchy, our current understanding of a given thing is the most basic form of "being" that we know about. In the case of magnetism, a spin magnetic moment is essentially one of those things. It's a basic law of nature, and can only be explained mathematically, not in any conventional conceptual sense that we can wrap our heads around on a superficial level.

So long story short, I don't think it's possible to answer your query in a way that will feel satisfying. But I get what you're asking, because my brain tries to understand things conceptually in the same ELI5 sense.

What kind of fish would you be?