Test retest reliability is a thing in psychometrics.

Ah cool. So there is data? How consistent are humans?

What I'd really love is an actual number for a "human hallucination rate". How often will a random human

1) claim something that is wrong

2) defend the wrong claim and/or logic even when the problem is pointed out to them

(and this of course outside of the usual topics. In politics? I don't care. In religion? Don't care (well, maybe a bit more than politics). Let's say in physics or popular logic or something like that)