What Science Can't Prove Gregory Koukl Sign up to receive Solid Ground free. Don't ever be bullied by such a statement. Science is completely incapable of proving such a thing. I'm not saying that because I don't like science, but rather because I know a little about how science works.
Science operates on induction.
The inductive method entails searching out things in the world and drawing generalized conclusions about those things based on observation. Scientists can only draw conclusions on what they find, not on what they can't find. Science, by its very nature, is never capable of proving the non-existence of anything. All science can do is say that scientists may have been looking for unicorns for a long time and never found any. They might therefore conclude that no one is justified in believing that unicorns exist.