Do speaker cables need a burn in period?

Cargo cultist alert!! 🚨 By the way, god gave you two ears for a reason.

I was actually referring to the "I think we are adults here" comment (should have quoted), but this works too.

Melanesian misanthrope alert!

I had some KK silver KCAG interconnects that sounded a little harsh so I cooked them for 24 hours but no change. I then cooked them for a solid week. Wallah, the harshness was gone. Now what happened? 1. I might have cleaned the contacts by moving them. 2. Some static may have bled out. 3. The power grid may have been cleaner. 4. I might have been in a cheerier mood or by waiting and being more optimistic.

Virgin Morrow cables

"don't immediately suck and then magically become fabulous, although they do seem to improve a bit."  

Mine cost <10% of equivalent Morrows, and they DO immediately suck (uncertain about the magic to come). So I'm thinking maybe we get what we pay for and this thread is way out of my league. Thanks, folks!