I don't think fairness means that you give equal time to every point of view no matter how marginal. You weigh the sides, you do some truth-testing, you apply judgment to them.
I destroyed a lot of guitars trying to get them to do what I wanted, but I learned something from every guitar I tore apart, and discovered even more things. Things like if the string is not straight from the bridge saddle to the nut, you're going to have friction.