LOL. As a software engineer, I've heard that again and again from high-up managers. Usually the ones who have no idea of the value of testing, and how much money testing saves in the long run.
Yep, pick one and get to building. Then when the design fails, the costs triple or quadruple because it has to be torn down and rebuilt.
Then build Wall #1 for 100 miles, Wall #2 for the next 100 miles, etc. That way we’re only replacing small portions when something fails.
As I mentioned it took them less than 2 years from conception to get an SR 71 in flight. Yes this is a bit ridiculous