I once had a very special, very young colleague, who would always question everything, but was never willing to change his own mind. And of course, he believed the Bible was 100% verbatim correct and scientists were lying.

Well, one day he exclaimed, "Scientists don't know everything for certain either!".
So, I responded, "Yeah...? They don't claim to...?".

And that left him absolutely confused. I don't know how much propaganda his parents fed him, but I guess, at the very least he never considered that a possibility.

So, I told him that it's not called a "scientific theory" for nothing. And that literally everything in science will be abolished, if you can disprove it.

After that quick shock, he was already back to not wanting to believe anything that sounded logical, but his last response was something along the lines of "That doesn't make any sense. How can you live by something and not know for certain that it's correct?".

Which, like, I get it. It's scary to not have certain answers. But it makes no sense to just pick one answer and decide that this one is certain.
But yeah, that is the mindset he grew up in.