Directional cables - what does that really mean?

There is no evidence to support the idea of tiny diodes occurring in wire or tiny magnets for that matter. As for high-speed communications, as fate would have it directionality shows up in audiophile Ethernet cables, USB cables and HDMI Cables. Directionality is not an issue in any communications, including telephone wires or networks.

There is no evidence to support the idea of tiny diodes occurring in wire or tiny magnets for that matter.

I only repeat what I've read from the article.  I don't know either.  You're guess is as good as mine.

As for high-speed communications, as fate would have it directionality shows up in audiophile Ethernet cables, USB cables and HDMI Cables.

That's is because ultimately your hearing is sensing the difference if it's audio application related. 

What I meant is that in term of other high speed communication that is not audio related, directionality probably not an issue.  I mean there are a bunch of high speed communication that has nothing to do with audiophile.  

What do we know so far? Part 1

The “audio signal” in a wire is a voltage and current. The audio signal is not (rpt not) the music. It is not the musical waveform. It doesn’t become a musical waveform until the speakers produce acoustic waves in the room. The audio signal in a wire is alternating - in most cases the circuit is AC. In a fuse the alternating signal goes back and forth in the same wire. In speaker cables the signal also goes back and forth on both separate wires, the - and +. Push me pull me. 🔛 But we are only interested in the signal moving toward the speakers, the direction that affects the sound. We can forget about the signal when it’s moving in the opposite direction. 🔜 That explains how a wire in an AC circuit can be directional.

Next up, why is a wire non-symmetrical and how does that physical non-symmetry affect current and voltage? And what is the electrical signal - current and voltage - comprised of?

If this is what you have leaned in Part 1, which took four years, I would hate to see what you are going to learn in Part 2 and how long it will take.

….."But we are only interested in the signal moving toward the speakers, the direction that affects the sound. We can forget about the signal when it’s moving in the opposite direction. 🔜 That explains how a wire in an AC circuit can be directional.".....

Color me confused, the above explains that the signal is directional, as it travels towards the speaker, it does not explain why the construction of the wire makes it directional, or whether the construction alters the sound produced whether hooked up one way or another in relation to the extruding process.  

That’s in Part 2, silly goose. 🦆 First things first. Part 1 explains why wire or fuses in AC circuits are directional - assuming a physical non-symmetry of the wire - and establishes what the audio signal actually is and isn’t. By the way, we’ve already shown the theory regarding the drawing of wire through a die has some problems. So if anyone has any brilliant ideas feel free to chime in. 

Pop quiz 🤗 - The skin effect states very high frequencies travel on or near the surface of the wire. People sometimes claim the skin effect is the reason wires are directional, i.e., high frequencies are distorted in one direction 🔚 but not the other 🔜. But the “signal” is current and voltage. It’s not (rpt not) audio frequencies traveling down the wire. So, what’s going on?