- Is Eve irrational?
- Can believing an unfalsifyable believe be rational?
- Can this argument be extended to believe in God?
In a Bayesian framework, the one and only way to make a belief unfalsifiable is to put its probability at 1.
Indeed, since Bayesian update is at the root about logics and not about physics: even if you don't have any technological mean whatsoever to recover an evidence, and will never have, if it's logically possible to falsify a theory, then it's falsifiable.
On the other side, once a belief acquires a probability of 1, then it's set to true in the model and later no amount of evidence can change this status.
Unfortunately for your example, it means that unfalsifiability and lack of evidence, even an extreme one, are orthogonal concern.
unfalsifiability and lack of evidence, even an extreme one, are orthogonal concern.
That is a very novel concept for me. I understand what you are trying to say, but I am struggling to see if it is true.
Can you give me few examples where something is "physically unfalsifiable" but "logically falsifiable" and the distinction is of great import?