@andy2
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.
Agreed.
But if we want to understand reality, we also have to not ignore that our perception can be flawed, and influenced in any number of ways towards error. So, ideally, the most careful approach when we *really want to be sure* of a result, would be a method that reduces the variables, including the well known forms of bias.
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.
But that analysis leaves out the whole point: that people can honestly be mistaken in their perception! The choices for explanation don’t sit between the false dichotomy of: "The phenomenon people claim to perceive is real OR they are lying."
The other option is they are MISTAKEN.
This is why controls for bias is foundational in scientific testing.
Cable manufacturers are just as human and prone to bias as anyone else. Bias influences, or just mistakes in perception, can happen whether you are switching quickly between A and B, or slowly over time.
That’s one reason why objective measurements are so helpful, which provide some evidence there IS a physical phenomena involved, and not just changes in our perception.
Would you agree?
Cheers!