Do you ever doubt you ears ?

I think I have very good hearing, probably better than average based on occasions when listening together with others. I have years of experience listening to a huge range of systems and equipment, a-b
comparisons etc., and I have also read an enormous amount about the subject. No doubt many here are at a higher level than I am.

When comparing cables I sometimes get confused. I hear big differences/improvements sometimes but when I go back to the reference a week later it sounds better. Switching around confuses me more. Bass is always the easiest and most consistent to compare. I start doubting my ears or my memory, especially when my opinion is 180 degrees different to reviews.