Flies emerge suddenly in the fossil record. One of their major characteristics is their extraordinary maneuvering ability. Human beings cannot raise and lower their arms 10 times a second, yet the average fly is able to beat its wings 500 times a second. In addition, both wings beat simultaneously. The slightest discrepancy between the vibration of the wings would make the fly lose its balance. Yet no such discrepancy ever arises. It is of course impossible to account for the instantaneous appearance of living things with such flawless structures in terms of evolution. This is one of the clear proofs of God's creation.