哈佛大学和法兰西学院（College de France）菲利普·阿吉翁（Philippe Aghion）及其合作者进一步确认了这一发现，他们指出，尽管富裕国家底层99%的人口之间的不平等性没有增加，但顶层1%已经绝尘而去。
Philippe Aghion of Harvard and the College de France and his co-authors have reinforced this finding, showing that, while inequality has not increased among the bottom 99% of rich-country populations, the top 1% has pulled away from the pack.