[fsckboy]

>the original manufacturing processes could not have been that complex or specialized either?

this is sort of tangential, but I read that the NASA Saturn V rocket that took the astronauts to the moon could not be recreated today, the "manufacturing process" relied on a small army of skilled welders, machinists, fitters, etc. that just don't exist today. The new rockets being built now need to fit into the currently available industrial base.