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.
I suppose we'll be told that by virtue of being paid attention to the voodoo and magic won't work.
I suppose we'll be told that by virtue of being paid attention to the voodoo and magic won't work.