Yeah, this doesn't make sense to me either. 60 years ago South Korea was one of the poorest countries on Earth. Today it manages to build world-class infrastruc

Yeah, this doesn't make sense to me either. 60 years ago South Korea was one of the poorest countries on Earth. Today it manages to build world-class infrastructure at very low cost. In contrast America was the first country in the world to build subways on a mass scale. Yet today it has by far the highest subway construction cost in the world. At least an order of magnitude higher than South Korea. I'm skeptical that aggregate experience on a national-level at decade-scale makes any major difference.