In the 1950s, the philosopher Bertrand Russell made the argument that the burden of proof must be on the believer, not the skeptic. He did this by asserting that there is a teeny tiny teapot in space that cannot be perceived by even the most powerful telescope. He suggested that if this idea was supported by ancient books, it would be deemed more likely, even if the ancient books included no proof. We cannot be absolutely sure that there is no space teapot; it’s possible there is. But we don’t have any reason to believe in it.

