Do speaker cables need a burn in period?

I have read much of these comments (out of total curiosity) since I THOUGHT I HAVE HEARD IT ALL!! WOW, Really? I am aware that some can hear better than other's? BUT! i am also knowledgeable enough to know when i see a Scam being perpetuated on the public! it is a total Psychoacoustic sales tactic! Please people! DOGS CAN'T HEAR WHAT YOUR SAYING!