He who knows only his own side of the case knows little of that. His reasons may be good, and no one may have been able to refute them. But if he is equally unable to refute the reasons on the opposite side, if he does not so much as know what they are, he has no ground for preferring either opinion… Nor is it enough that he should hear the opinions of adversaries from his own teachers, presented as they state them, and accompanied by what they offer as refutations. He must be able to hear them from persons who actually believe them…he must know them in their most plausible and persuasive form.
- John Stuart Mill
This is pretty much exactly the mindset I’m trying to avoid.
I’d note you could just as easily flip the 2016 classified documents business. A Conservative could plausibly argue that Liberals were willing to vote for someone being investigated for mishandling classified documents when it was their person, but once it was trump it became a serious voting issue. (I tend to disagree, I think trump’s were a lot worse but I can absolutely see the logic of their case.)