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.
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.