例如一个人寿保险公司也许不能预测每个人的寿命长度,但它可以对群体做出准确预测。
A life-insurance company, for instance, could wrongly predict the life span of every person it insured but still get the correct result for the group.
例如一个人寿保险公司也许不能预测每个人的寿命长度,但它可以对群体做出准确预测。
A life-insurance company, for instance, could wrongly predict the life span of every person it insured but still get the correct result for the group.
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