然而，使用电子邮件地址来标识某人的原理并没有缺陷：通常，如果您向一个地址发送一条电子邮件消息，那么您希望它能到达某个确定的人。
Yet the principle of using an E-mail address to identify a person isn't flawed: in general, if you send an E-mail message to an address you expect it to reach a certain person.
但它没能处理单一货币的固有缺陷，欧元并没有如希望的那样促进其成员的经济趋同。
But it did not deal with the underlying faults in the single currency, which has not worked as hoped to promote convergence among its members' economies.
不幸的是，这些结论大多数都是有缺陷的：许多的结果都是道听途说的，并没有设立相应的对照组以用来考虑安慰剂的影响[5]。
Unfortunately, most of the studies that came to these conclusions were flawed: many results were anecdotal, and control groups were not established to take account of the placebo effect.
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