Frownland

You yourself said that our brains are capable of being overwhelmed with passion and emotions, which in itself suggests that our brains are wired to do so. We can already explain why some people act in irrational manners but it can be through a number of reasons.

Humans already do several things that don't act on a rationally thought out basis that aren't atrocious. Think of almost any social situation and ask how rational it is, even though it can be explained through revolutionary theory. You being unable to grasp their logic as to why they did it doesn't matter. As sad as it is, some people are wired to have a thought process that would justify some of those things in the same manner that you use fallacies, a generally frowned upon tactic in debate because when you strip it down, your argument doesn't necessarily negate anything. You're just overwhelmed by emotions. The reason that we have standards in logic is to overcome this common trait. It's like we almost assumed it was a problem based off of statistics ie math. Most people don't know that they're idiots, so these standards are a safe guard that they put out to account for that instead of relying on gut feelings and the irrational human mind.

There's a reason why we don't have the most concrete method of finding these things out: ethics. We can't just slice open everyone's mind when they have a disorder.

I'm sorry that I have to resort to that dern fancy talk, but I reckoned it was the only way to get mah point across.

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Studies show that when a given norm is changed in the face of the unchanging, the remaining contradictions will parallel the truth.