If you can't think of an observation that could disprove a theory, that theory simply isn't scientific.
Jerry A. CoyneNow, science cannot completely exclude the possibility of supernatural explanation. It is possible though very unlikely that our whole world is controlled by elves. But supernatural explanations like these are simply never needed; we manage to understand the natural world just fine using reason and materialism.
Jerry A. CoyneIn the end theologians are jealous of science, for they are aware that it has greater authority than do their own ways of finding "truth": dogma, authority, and revelation. Science does find truth, faith does not.
Jerry A. Coyne