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
Carl109 - I know, it was just a joke. It might be easy to observe that something likely "IS" but much more difficult to prove that something "ISN'T". We just don't know enough. Electromagnetic wave cannot be explained by stack of ping-pong balls or something like that, because there is a space between electrons about 100000x their size. How charge is transfered if they move very slow?. One theory is that electrons emit photons but it does not work either. We learn just few years ago how aspirine works (in usage since 1800s). Once we thing we know everything new discovery come like recent 4-th missing element "Memsistor". I would not involve science in Audio.
When I see great spects like THD=0.0001% I expect poor sound - something has to give. I don't even look at specifications.
Here's some food for thought

Food? Sure I'll have a slice of pie. Man this liqueur is heady stuff.

As for directional interconnects, let's stick to hard facts - the connection is key - and everyone knows that either way round works. Although a shield grounded at one end is advisable, especially if you are not sure of what RF/EM you might pick up.

And while your at it, Carl, is there any tea left in the celestial teapot? I'd love a cup!
Some folks sure like to argue, I am not interested in starting another one. I just have two questions:
i have a Rotel 1580 preamp going to a Rotel 1590 amp. I use a decent cd player going into the preamp. I connect the cd player to preamp and preamp to amp with Transparent Musiclinks. I connect cd player to preamp in the direction indicated on the cable. But when I connect the preamp to amp the same “right” direction (the direction of the flow), it sounds horrible. A 2 year old would say so. But, when I eeverse the preamp to amp cable, it sounds great.
1. Why?
2. Am I going to hurt anything?
I would greatly appreciate some guidance from those who clearly know more than I. I was ready to sell my musiclink cables until I tried the reverse direction from pre to amp. Now, I love them. Thanks.