Do speaker cables need a burn in period?

Did milk squirt out of your engineer friend’s nose? One wonders if engineers are inherently closed-minded sometimes or if they’re taught to be like that.

My experience is that cables sound better after a week of not being moved, and a few hundred hours of playing time, whether purchased new or used.  You will know what you think in a week or two. Don't worry that electrical engineers cannot explain this. There is very very much that engineers and scientists cannot explain...

As we sailed into the mystic......

No, they don't.  Most burn in requirements are simply there to get you to keep the product beyond the return period.

@jl35  Bingo!! 🧐       @mitch2  @jnorris2005   Not so much.😔