A more direct paraphrasing would be, Just because I don't have all the answers doesn't mean that your answers are correct.

A concrete example: just because scientists don't currently know everything about how evolution happened, that doesn't mean that Young Earth Creationists are right. Typical YEC debating strategy is to look for gaps (real or imagined) in our current theories, and act as if that proves that God created the world in six days, and from the dust created every creeping thing that creepeth upon the earth, etc.