Magic is defined differently of course depending on the story. Typically, magic itself isn’t usually defined or explained. The limitations and abilities of magic is explored in most fantasy, but the magic itself is typically more mysterious. This is a generalization, but it is something I have observed on average.
I want to pose the question to the reader, is it important to know specifically what magic is? Should magic be more mysterious? If so why? As a reader and a writer, I understand both sides. I like having mystery to stories, but too much mystery leaves me unsatisfied with the story. If the author creates a world with in-depth descriptions of magic it feels more real to me, and I can escape further into the fictional place. I would love to hear your thoughts.