Oh sure, they understand logic and their behavior, but they don’t understand what’s they’re saying (particularly the validity of it) arstechnica.com/?p=1961606
They’re like… a story author. They understand the rules of language well enough they can write a story, but they don’t understand the data or reality well enough to know if they’ve told you the truth, told you a lie, or told you something in-between.
i.e. they have no idea if they’ve told you fact or fiction, they just know they’ve done a convincing job of conveying the message based on language patterns, and that is an extremely big problem.