math requires an absurd amount of memorized techniques/patterns ... maybe that's what you mean by fluency? of course these are rarely static (after all one can

math requires an absurd amount of memorized techniques/patterns ... maybe that's what you mean by fluency? of course these are rarely static (after all one can learn proofs of theorems without being able to solve any problem), hence the need for the "muscle memory" of how to apply these techniques to the particular patterns.