Consider the following belief
A human can survive if they don't drink water for 1000 days
We knew from biology that this is practically improbable as there are very few people who can survive for 18 days without water (Andreas Mihavecz in 1979).
However, there are also beliefs that are unreal/falsehoods
A fern has transparent leaves
But regardless of your position on that, you will not die from (dis)believing it.
- It appears that reality is sufficiently objective enough to result in some false belief unable to survive without the holder of the belief to die, thereby restricting its ability to proliferate.
Therefore my question is:
What metaphysical criteria a false belief has to have in order to be susceptible to be eliminated by an objective reality?