Yeh, you make the point. So there are economists who claims that future is unpredictable, like Xiaokai Yang[1]. [1] http://en.wikipedia.org/wiki/Xiaokai_Yang ht

Yeh, you make the point. So there are economists who claims that future is unpredictable, like Xiaokai Yang[1]. [1] http://en.wikipedia.org/wiki/Xiaokai_Yang http://en.wikipedia.org/wiki/Xiaokai_Yang