但是，它们也使经济更容易受到某些小概率的“尾部事件”（tail events）的伤害，因为分散化、多元化程度的提高不可避免地会导致相互关联，进而在金融机构、企业和居民之间形成潜在的多米诺骨牌效应。
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在风险分析中，随机变量的尾部一直是风险分析的重点，因为灾难事件往往就在这个区域里发生。
The tail of random variable's distribution is the focus of the risk analysis because the event with small probability often occurs in this area.
在分析金融数据时，分布的尾部反映的是潜在的灾难性事件对金融机构造成的重大损失。
In the analysis of financial data the tail of the distribution imply the serious loss of a financial institution led by potential disastrous events.
人们需对这些尾部极端事件做出精确的判断和预测，这就需要寻求更加适合的模型方法来处理这些极端情况。
If people want to make accurate judgment and prognosticate to these tail extreme events, we need to find a more suitable model which deals with these extreme cases.
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