I think you misunderstand evolution. Engineering does not _evolve_, engineering _improves_. In order to make better airplane, you _think_ what would improve it,

I think you misunderstand evolution. Engineering does not _evolve_, engineering _improves_. In order to make better airplane, you _think_ what would improve it, and if it makes sense, you try it, and if it does make it better, you test it some more, and if it seems safe, and the improvement is worth it, you implement it. On the other hand, evolutionary approach would be introducing mostly pointless random changes in plane's schematics, building them all (even those doomed to failure), and making them carry passengers as soon as they're built. Then, after a few years, you'd take the schematics of those which did not crash, and repeat the process. _This_ is evolution, what you describe is rather closer to lamarckism.