Imagine you would see a fact that contradict your deepest believes, the core of who you are. This fact is uncontestable, is evidence in its purest form, is something that happened and you know with 100% certainty that it happened. But this fact also is against what define you as a person, your most profound thoughts. Either political, religious , philosophical or moral believes, whatever sits deepetin you.
Do you think this evidence would make you change your mind, or not?
If I had my understanding of the world that deeply shaken, I’d be in the throws of Lovecraftian insanity. I would have even less certainty of anything than the already low certainty I have now. That’s a ‘vampire problem.’ There’s no way of guessing what I might do if I was that fundamentally derealised.