I’d like to add that, at the other end of the spectrum, one can have such a closed-fist mind that all they have is conviction: their “truth” is the only acceptable “truth,” must be all the “truth” and nothing but the “truth.” Evolving evidence be damned. (For example, certain scriptural-literalist religious fundamentalists.) The possibility of alternative explanations (ala Epicurus) rejected out of hand.
Guilty.