一种根因分析方法，通过连续询问5次以上的“为什么”，将真正的根因找到。
Whys: A method of root-cause analysis that entails the progressive asking of "Why?" at least five times or until the root cause is established.
“我们询问，有多少人在过去的两周里连续喝了五杯或更多的酒，”巴尔说道。
"We asked how many had taken five or more drinks in a row in the past two weeks," says Bahr.
作为本书调查的一部分，BCG询问了来自22个国家的12,000位妇女连续120个问题。
As part of the research for the book, BCG asked 12, 000 women in 22 countries a battery of 120 questions. And among the rich findings...
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