If someone does not hear the direction of the wires, then either he is deaf or the system has a very low resolution.
The fact that engineers and scientists do not know how to measure it is the problem of imperfect models and measuring instruments. Any scientific or even more so engineering model is not ultimately true.
The fact that engineers and scientists do not know how to measure it is the problem of imperfect models and measuring instruments. Any scientific or even more so engineering model is not ultimately true.