The main justification for a monetary union cannot be the possibly disastrous consequences of its falling apart. Even less convincing is the neo-mercantilist point that the eurozone would allow for indefinite current-account surpluses (it does not).
但是，如果欧元区要成为明智的长期之选，仅仅活下去是不够的。货币联盟的存在理由不能仅仅是崩溃所可能造成的灾难性后果。更没有说服力的是新重商主义观点——欧元区将引来无穷的经常项目盈余（并非如此）。