But beyond that, in any conversation you are also dealing with an emotional truth. It's a thing someone believes is true off the internal feeling they have, or what they want to be true, or what they think must be true for the sake of compassion. The problem with this particular truth is it is both necessary to being a functional person (as it is the thing that allows us to have empathy and kindness in our interactions) and yet also something that is hideously misused. For every ounce of compassion it can well up in us, it also can be used to unfairly denounce actual facts and pervert the truth.
For instance, 9/11 trutherism is a completely inaccurate bit of nonsense, unfounded in every discipline it touches, but it is still propagated by the simple act of someone distrusting government so severely that they place themselves above the fray of being manipulated. That's how powerful emotional truths are. They can take everything we understand about reality and flip it on its head. And often, it's so powerful that many are not aware when they've come to believe something because of their emotional truth. And wouldn't you know it, but the more tenuous the factual claim becomes, the more an emotional truth it becomes.
But the real danger of understanding the emotional truth is it is something that they can use right back against you. With the 9/11 truthers, all your science just becomes truth that you are part of the "sheeple," someone who just wants to pull the wool over their eyes because "the truth" scares them. Which just means that anyone can challenge virtually anything you believe on the same grounds and anything can now fall into disrepute. In this lens, the mainstream media suddenly becomes inept. With gamergate, we're all a bunch of idiots who can have our eyes blinded in our commitment to stopping sexism and loving feminists that we ignore corrupt journalism, etc. Etc... When you don't understand how easy it is to flip the script without holding yourself to factual standards, conversations can get really, really dangerous.