In most fables, it's possible to track down arcane rituals in full detail if you have the patience of a lifetime.

From this perspective, discoverability isn't sufficient to claim that something isn't magical. What's magical is that it's sufficiently complicated and reliant on other sufficiently complicated things that -- in practice -- no one utilizing it will bother digging that deep.

These things are only knowable in the hypothetical. In practice, they're arcane incantations with rigid, arbitrary constraints that must be respected for the system to function as you'd like.