Andy, one other point I failed to cover is that if the high frequency
electrons do go down the wrong wire by mistake they then have to fight their
way back up the wire to get to the correct wire. This can cause serious
harshness in the sound from the speakers and can also muddy the sound
considerably. There can also be significant delays in electrons getting to
where they are supposed to go. I understand this sort of thing is the cause
of many phase problems that can arise with improperly implemented speaker
bi-wiring..