No worries. Thanks for the question.

"Hand-waving" exists in both genres, to be fair. Plenty of stories have devices magical or scientific that work via "Who knows, we just know that it works" logic.

But even if there is a magic solution to a problem, what sort of ramifications does that have for the setting? Can magicians create food? What's the cost, and would anyone ever starve? At the root, be it magic or science, the same questions about society and the world will be asked, and an author will need to have (or find) those answers.