I need help on directionality of speaker cables


I just picked up a pair of Harmonic Tech Pro 9 speaker cables which have an arrow on the label. Should the arrow point towards the amp or the speakers?
128x128pdreher
...but some that go above and beyond simple rules of electronics have great benefit
Tbg: for Goodness sake, you cannot go ABOVE the RULES of electronics -- nor are said rules necessarily simple.
You may go beyond the SIMPLE rules -- but that's neither here nor there.

Cheers
As I said, you are talking about electrical engineering not physics. They are simple rules that allow circuit and wire designs, but they do not capture all that holds in physics.
I've just asked one of my colleagues in the same firm who is an EE and without any hesitation said that it's DC in digital.

He needs to go back to school. Digital data is usually sent with an encoding such as Biphase Mark Code. This essentially amounts to a high frequency alternating waveform that travels down a wire (in which the clock frequency is embedded or can be recovered upon decoding). DC is used in all digital and electronic power supplies but not for transmission on a cable or through the air.