Here’s what I said in 2012:
Each year I have done a post discussing the issue of when China will have the world’s largest economy. Lester Thurow says it won’t be until the 22nd century; I say it may have already happened.
Just to be clear, there is no “fact of the matter,” just as there is no fact of the matter as to whether China or the US is larger in terms of square miles. It’s what my students would call “merely a matter of opinion.”