Using existing Boeing Standards and Processes? (how to install a rivet. how to anodize aluminum. how to verify software. 100 years of experience written into

Using existing Boeing Standards and Processes? (how to install a rivet. how to anodize aluminum. how to verify software. 100 years of experience written into requirements and specifications of how to build a plane) Likely 10 years. Starting from scratch. 30 years.