davidf said:
Of course. I stand corrected...
If that was actually true, it would make this thread worthwhile. The reality is that we can not control the subconcious part of the brain and that affects everything.
Hi-fi is a relatively trivial hobby so no-one is going to spend lots of time and money on scientifically viable tests to prove or disprove differences in cables, not going to happen.
What we can do is examine the test data that we do have, for example we know that, when tested in even the simplest of blind tests, differences in equipment or cables (often 'night and day' in sighted tests) virtually dissapear. There are many examples to be found, see previous threads on this subject.
We also know that in critical medical tests, the testers go to great lengths to avoid suggestion bias and placebo effects, double blind testing has become the 'gold standard' for subjective testing and it is so for a reason.