“I don’t know” is the most dignified answer in response to questions regarding that which we don’t know. Questions such as, “how was the world created”, “is there an afterlife” and so on.
So too is the answer “probably not” sufficiently dignified in response to questions regarding the highly improbable. Questions such as “is there a man with flying reindeer at the north pole” and “did the force responsible for the universe also write a book allocating a piece of land, and suspend physics to split a sea, for a particular group of humans”.