The more down-to-earth explanation is that the global surplus reflects statistical errors.
更加确切的解释是全球盈余反映了统计错误。
In statistical terminology, this sampling variability explanation is called the null hypotheses. (the null hypothesis is designated by the symbol Ho.)
在统计学术语中，这个抽样可变性说明被称为虚假设(null hypothesis)。
The problem is that this "explanation" is statistical.
问题是这种“解释”是统计分析。
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