It makes them happy and gives them something to look forward to, but is unfortunately untrue. A famous or prominent person believes it - at one time, the grandest thinkers believed that the earth was the center of the universe. They are unique or different - people once believed that wood burned because it had an inherent property called fire. I'm sure there were other theories, but this one is quite unique and also has the benefit of being agreeable. You can't prove me wrong.
Science uses the latter to insure an orderly progression of knowledge.
In other words, it's valid to assume that something is true or not, which is different from saying it is true just because no one can prove otherwise. We can't think of a better explanation - light was once believed to travel in a nearly massless, invisible substance since all known waves oscillated in some sort of medium. But this has since been proven untrue. I have never seen a verifiable miracle. Even then, I would have to be convinced that it wasn't a magic trick.