A believer might point out though that someone built the carrier, and that a human, or an ant, or even a single cell is orders of magnitude greater in complexity than an aircraft carrier. To turn the analogy around, if a scientist found an airplane in a cornfield, would he be more likely to think that someone built it and put it there, or that all the pieces somehow worked themselves together over the past five billion years?
Why couldn't randomness/evolution be the builder? Of course evolution couldn't build an airplane because that's mechanical, but in biology it's built it's equivalence.