I don't have any answers, but I suspect it's because we're evolved from things that didn't need to know. Related, I sometimes wonder how many derivatives you n

I don't have any answers, but I suspect it's because we're evolved from things that didn't need to know. Related, I sometimes wonder how many derivatives you need to go down in order to find the one that is discontinuous when you decide to make a motion. For instance: pressing the first key to type this reply, my finger didn't instantly jump from zero to non-zero acceleration (or jerk/snap) I assume. How many terms in the Taylor series for moving a muscle?