Depends on the fantasy world. Mana or MP for example is internal. In Chinese Wuxia mythology there's a concept of Chi. In Naruto (which isn't Wuxia but borrows

Depends on the fantasy world. Mana or MP for example is internal. In Chinese Wuxia mythology there's a concept of Chi. In Naruto (which isn't Wuxia but borrows a lot) it appears as chakra. In D&D it's the weave which is this higher power. But this digresses from the point. I think Magic is a bad analogy. When I looked into ML I was surprised to find how trivial it is. Pretty much all of intelligence can be simplified to this single endeavor of curve fitting. LLMs, GANs, deep learning... all of it are just different ways to find a best fit curve. What I found is that this knowledge (which is trivial to obtain) reduced the magic. Intelligence to me was no longer magical. Understanding intelligence made it less magical and more mundane. A better analogy would be those stories about characters walking into this epic void of lovecraftian incomprehensibility expecting only madness and more questions to arise from their journey that spans eons... only to walk back in 15 minutes with the realization that the answer is just 42.