Mainstream economists believe that the global economy should function as a balanced mechanical arrangement in which external surpluses and deficits are smoothed out over time. But periods of global economic expansion have virtually always been characterized by symbiotic imbalances.
主流经济学家认为全球经济应该是一个平衡的机械安排，外部盈余和赤字应该随时间的推移而平滑。但全球经济扩张期几乎总是伴随着失衡。