Belief is a powerful thing.
Well, not your belief: your opinions couldn't be less important. But, there is someone, and there always has been someone, who can control the universe by his powers of belief.
You see, at any given moment the universe is controlled by what one particular man believes. All things, right down to the laws of physics, are subject to instantaneous change as soon as one dies and another is chosen.
Amelia Earhart? Disappeared when the new Believer couldn't fathom a female aviator.
Ever wonder why Newton's seemingly obvious laws of motion took so long to come around? Well, for thousands of years all the Believers put their stock in Aristotle's physics.
Believers don't even know about their powers, and it is flat out impossible to tell who is one.