But the euro makes economic sense only for a subset of its current members, not for countries such as Greece in its current situation. Some economists have proposed a two-track euro, with “problem” countries using a “euro-B” that floats against the “euro-A” until they abide by the economic and financial rules and earn re-entry.
第三个选择是反思和重构欧盟本身，从欧元一直到基本机构。作为自由贸易安排的欧盟取得了巨大的成功。但欧元只对少数现有成员有利，对于目前的希腊等国家来说则是弊大于利。一些经济学家建议采取双轨制欧元，“问题”国家使用围绕“甲等欧元”浮动的“乙等欧元”，直到它们遵守经济和金融规则并获得重入资格。