Comment by CRConrad

Stretch it to 36, and that is four not-all-that short words, at 4× 9 = 36 letters. Form and function! :-)

So it gets monstrous only from five words upwards or so... But still, I think I may by sheer coincidence have come up with a heuristic (that I'm somewhat proud of): The more convoluted the logic = the longer the code needed to express it ==> the longer a name it "deserves".