IIRC, the fallacy was stated, “have you stopped beating your wife?”
Well....?
One thing that is taught very early on in engineering schools is exactly how many of those digits on your pocket calculator are actually “significant.” I remember a friend of mine explaining why, on a particularly difficult exam, the challenge of one question was how to arrive at the answer using no more than three consecutive math operations. (Within four operations, apparently, all of the significance of the answer would have been lost.) I nodded politely, but blankly ... and thanked my lucky stars that I didn’t go to Georgia Tech. ;-)