Improving global poverty estimates – the World Bank’s extend over three decades, beginning in 1981 – requires overcoming three major problems: insufficient survey data, flawed survey execution, and faulty PPP conversions. Unfortunately, the World Bank’s approach has evaded these issues or addressed them inadequately.
改善全球贫困估计——世行在这方面的工作始于1981年，已经进行了三十多年——要求克服三大问题：调查数据不充分、调查执行缺陷以及错误的PPP转换。不幸的是，世行的方法逃避了这些问题，或者说没有充分解决它们。