There is a ton of expertise with this kind of things, in particular the Netherlands. There's a lot of science done to back all of that engineering up. Yes, it i

There is a ton of expertise with this kind of things, in particular the Netherlands. There's a lot of science done to back all of that engineering up. Yes, it is an accomplishment in its own right, but no, its not miraculous, but down to decades of diligent research. The primitive methods used in New Orleans have always been a mystery in Dutch professional circles.