Kiddman wrote,
"Geoff, since there is no net flow, no "direction" of electron travel, then it follows there is no difference in the orientation of a fuse. Have someone change it, or not change it, and you have to identify it. You will see you fail as often as you get it right if the sample size is reasonable."
Kiddman, hi, actually that doesn't follow at all. What you wrote is known in the business as a Strawman Argument, a logical fallacy. The reason your statement is illogical is because the music signal is an electromagnetic wave that's not related to the electrons or the direction the electrons are moving. The musical signal, unlike electrons or current, moves in one direction only in an AC circuit. Follow?