power cord directionality

Audiogon's self-proclaimed reigning theoretical physicist, explains how vibration affects the signal:

Shirley you jest, mc. It’s the same for any cable or fuse or any wire. External vibration distorts the signal. Just like shaking a magnet.

jea48 wonders, How, exactly, does that work? 

geoffkait: I was kind of hoping you could tell me. Just a gut feeling? Oh, well, that’s the way it goes sometimes.

Then his specialty, the word salad:

By the way Poynting angles are not (rpt not) incompatible with the idea of vibration distorting the signal in cables and wires.

Captain Irrelevant strikes (out) again.

Take a wire, let's call it an interconnect. Put a reasonable load on it, say 2K ohms resistor on one end, similar to the output impedance of a tolerable source. Now plug that into a headphone amp. Hang that interconnect 6" in front of a woofer (to eliminate magnetic coupling). Turn that speaker as loud as you want and see if you hear anything coming out of the headphone amp (or record and listen later). If you can't induce a signal 6" in front of the woofer on a sensitive interconnect, what do you think the odds are that vibration has any impact on an AC supply wire or speaker wire?

Just make sure you connections are tight, as that would be by far the most likely thing to modulate with vibration .... if anything actually did.

I will say a prayer tonight for all of you...

Save it for the morning after.