Do speaker cables need a burn in period?

I question whether it's the new cable that's burning in or is it the listener getting used to them?

Here we go again.....

At the very least a few hours of not being moved. 
Never heard anyone report cables sounding worse after a few hundred hours.

At least a week after cryo. When comparing cables at least two days.

Yeah, again. Let's add to it - silver or copper or alloy ? I prefer copper for interconnects and silver alloy for speaker cables with my particular speakers. Both are Purist fluid cables. Solid state equipment.