Do speaker cables need a burn in period?

I bought an overly expensive RCA interconnect today ($19-20). I replaced a trusted and time-proven skinny one that came with some piece of electronics at some point in the distant past. New one has small arrows on it, or what seems to act as arrows. I tried them in both directions and there was no difference in sound. Not to practice audiophiliac blasphemy, I conducted this experiment with no blinding. I knew what I was changing and in what way. I am still not sure why that is better than single or double-blinded testing in these woods, but so be it.

This thread is about speaker cables and my experiment was about interconnects. Both are, in general, wires.

The conclusion is that wire directionality does not matter when dealing with wires of relatively short length (50 cm). Amen.

The conclusion is that wire directionality does not matter when dealing with wires of relatively short length (50 cm). Amen.

The only conclusion you can draw is that you didn't hear a difference in your system and in your room. 

Hey, glubson, if must post some light hearted jibber jabber would it be asking too much to do it on the right thread?

If someone sneaked  into your listening room and replaced your cables with the exact same cables that were not burned in, how long would it take for you to notice the difference in sound? 
If someone gave you a 10 to 1, $ bet that you could pick out the the direction of your cables with a blind listening test, how much money would you risk? 
For me, the real crime in these discussions is the suggestions that the difference in sound with these tweaks make an obvious difference.