Mendeleev’s successful predictions were the fruit of his insight into the structure of the periodic system. His failures were the result of pursuing the pattern he had perceived beyond the limits of its applicability. These two things are not equivalent.

中文翻译：

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做对不等于做错

门捷列夫的成功预测是他洞察周期系统结构的成果。他的失败是追求他认为超出其适用范围的模式的结果。这两件事不是等价的。