The erosion is traceable to several factors, including deficiencies in primary and secondary education as well as poor macroeconomic management. But the US also has disturbingly low rankings in the quality of its infrastructure (#24), technology availability and absorption (#18), and the sophistication and breadth of its supply-chain production processes (#14).
持续下滑可以归结为若干因素，其中包括中小学教育缺陷和宏观经济管理的低效。同样令人不安的还有美国的基础设施质量排名（第24位）、技术有效性和吸收度排名（第18位）、此外还有供应链生产工艺的广度和深度（第14位）。