The economic historian Harold James has shown in a recent book that in the 40 years of negotiations leading to the adoption of the common currency, all of the problems that now beset the eurozone were discussed repeatedly. Everyone understood that a monetary union would require enforceable fiscal and banking rules.
经济史家哈罗德·詹姆斯（Harold James）在其近著中指出，在接受共同货币的长达40年的谈判中，今天困扰着欧元的所有问题都被反复讨论过。所有人都明白，货币联盟要求强制性的财政和银行规则。但这些规则从未被采取。