It's unfair to leap on a single mistake and say it was the postscript of his essay. He also bought Petro China as part of his strategy to deal with a weakening

It's unfair to leap on a single mistake and say it was the postscript of his essay. He also bought Petro China as part of his strategy to deal with a weakening dollar around the same time and by when he was selling it 2007, it had earned several billion. It is also worth pointing out that the essay dealt with China specifically, and that the RMB has appreciated against the dollar in the time since (and will more as the government relaxes its peg).