Those Who Deny Necessary Truths

Though irrationality is a curable disease of the intellect, few recognize it as such, meaning few make intentional efforts to purge themselves of it.  One of the greatest frustrations of being a rationalist is observing the thorough stupidity of non-rationalists manifest itself in every aspect of human societies.  The greatest of stupidities is, of course, denial of what cannot be false.  Ironically, necessary truths (a thing is what it is, truth exists, and so on) are often denied by those who sincerely believe in a host of fallacy-riddled, unverifiable positions.

Not a single person I have met who denies absolute certainty of logic and consciousness (not to mention the dozens of other truths that can be proven in full) acts like things such as the existence of morality, the existence of other minds, and the accuracy of specific, immediate sensory perceptions are entirely up in the air in terms of verification and falsification.  Ironically, these irrationalists doubt and deny what cannot be false while treating uncertain matters as indisputable.  They might act surprised, concerned even, upon someone telling them that no consciousness besides one's own can be known to exist, but they will pretend like it is possible for one's own consciousness to be an illusion.  Amusingly, they have a high regard for induction, science, and testimony, even as they disregard first principles, deduction, and introspection.

They take things that can be proven and treat them as if they are only capable of being supported by fallible evidences, all while they take things that are utterly incapable of being proven and treat them as if they are knowable.  Irrational minds divorce themselves from a clear understanding of reality to the point where they mistake proof for uncertainty, the laws of logic for illusions, and mere evidence for proof.  When a person flees from necessary truths, absolutely every belief he or she possesses becomes the result of an arbitrary, imbecilic swirl of preferences.

Unless such a person person wants to change, neither refutation nor mockery is likely to affect them (though both are still valid responses).  Fallacious mindsets are curable, but they can only be salvaged if the minds plagued by them exert actual effort towards shedding errors, forsaking assumptions, and clinging to logic, regardless of what beliefs that means they must abandon.  Many people are not willing to accomplish these things precisely because of what the transformation would cost them: adherence to the untrue or unproven.