Directional interconnect cables


I see several big-name interconnect vendors mark directional arrows on the outer jacket of the cables.

How is it that a wire can be directional? It's a simple electrical conductor, how is it possible for it to be directional, to sound "better" when connected in one direction vs. the other? This does not make sense to me, perhaps someone here can explain how this can possibly be so...
lupinthe3rd
MIT and Transparent cables have direction due to the networks involved, which need to be close to the termination of the signal. Ordinary cables have no inherent direction but should be used in the same manner once installed.
Some "ordinary cables" are indeed directional, but only as it relates to the ground. Do what your cable maker says. They are NOT consistant from maker to maker.

Dave
Acoustic Zen says the arrow points in the direction of signal flow, e.g., from CDP to pre-amp, from pre-amp to amps, from amps to speakers.
I agree with the common ground idea, "star grounding". However, in the case of a phono pre, this kinda goes out the window:

CDP -> PRE <- AMP = common ground at the pre
TT -> Phono -> Pre <- amp = no real common ground