translation.en: And actually in the period through which we've been working over the last 18 years -- partly because of the financial crisis and a little bit of humility in the profession of economics -- actually people are engaging in this issue in all sorts of countries around the world.
translation.zh: 事实上在那段时间里 在过去的十八年里，我们一直在做这件事情-- 一部分是因为经济危机 和一些专业经济学的谦逊-- 实际上人们探讨此问题 在这世界上的任何一个国家。