Do speaker cables need a burn in period?

+1. @cleeds  You said " What I do think is odd is that those who clamor for others to pursue measurements or blind testing seem so reluctant to undertake the work themselves."  EXACTLY!  If you are appealing to the importance of measurements then supply the data to prove your assertion.

One more thing... Do the scientists and electrical engineers here truly believe that all happenings have measurements derived from scientific experiments that explain those happenings?

Metaphysics baby....metaphysics. 🧐

Hifiman
No, at least I, me, this EE, do not believe we have science derived explanations for many things in the universe, and especially in our heads. But for audio frequency signal transmission over several meters of cable, yes, I do.
Don't forget that the military and big industry has had huge interest and investment in this exact topic for over 100 years.  So they have looked hard at both hypothesis and practicality.

So, help me understand. You think that anyone who disagrees with you is creating a pissing contest? Is that that the EE part of your brain talking or the pharma part?

@ganainm   Can you please share the science derived explanation regarding the fact that cables do not break-in?

I think in order to make a valid discussion, ones have to agree on some basic level which is our ears can identify differences in what we here.  If you say that all differences are psychological then there is no point to further the discussion.

Next, the argument that break-in is mostly psychological only works for the average buyer since he can only purchase a set of cable so he has to rely on his memory to tell the difference.  This argument does not work for manufacturers since they have a lot of identical cables some old some brand new so they can listen to them side by side, therefore there is no need to rely on memory.  So if they hear the difference then it's not psychological.  

Now if you say the manufacturers are flat out wrong or they just lie then I guess it's something all together difference.  I can't find any reason why they have to lie.  Break-in or not I don't see how that will benefit them.