Even Buffett isn't perfect :：what you can--and can't--learn from the world's greatest investor / Even Buffett isn't Perfect:What you Can-and Can't—Learn From the World's Greatest Investor what you can--and can't--learn from the world's greatest investor / 巴菲特也会错：你所不知道的10个巴菲特：what you can-and can't-learn from the world's greatest investor what you can-and can't-learn from the world's greatest investor