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average physics student vs POTUS 47
(thelemmy.club)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

Rules
No, the theory of electromagnetism and by extension physics in general is knowing how it works. How to use it is engineering, a different set of knowledge which we also have some of.
I think they mean more the difference between what rules it follows and why it follows those rules. It sounds like we know more about the "what" but not much about the "why" for magnets (or any of the fundamental forces).