IIRC, even if we could, we can do better. For example a Saturn V engine is around 5,000 parts, though we've lost the knowledge to assemble them. However, a cont

IIRC, even if we could, we can do better. For example a Saturn V engine is around 5,000 parts, though we've lost the knowledge to assemble them. However, a contemporary study of that found that, with modern manufacturing techniques, you can build an equivalent today with just 40 parts.