The standard position for any human being is to not believe crazy claims unless there is good evidence for it, otherwise you would get lost in all the claims. Paranormal shit, ghosts, telekinesis, god and so on and so on. The burden of proof is on the people who make these outrageous claims and guess what, no one has ever proved any of it.
If that is you crazy answer then i do have some crazy doubts,can you see the air we breath ,yet we believe that we are in taking oxygen and you could answer that because of scientific explanation ,but how many science not being fully developed to understand the vast extent of things,we are yet to settle on the whole solar system thing because science cannot give a certain answer regarding that. 