Good one! This actually does apply to options trading. Pricing quants may need to be masters of stochastic calculus, Ito's lemma, et al, but if you're trading and not pricing them, this analogy applies: even riding a bicycle, when described with physics equations, probably involves higher-order calculus that would put 2nd order options greeks to shame, but one does not need to understand the maths to learn cycling or even be the world's best cyclist! Similarly, if you trade the same instrument enough, you build "muscle memory" for how it moves, i.e., you get a feel for vega, vanna, et al which is almost visceral. The practitioner may use informal descriptions like, "uh oh, I can feel it bend now" rather than calculus to refer to a gamma-based acceleration of option price, but it is perfectly good enough.