 The article, and an included full-page color illustration of Yau grabbing the Fields Medal hanging around Perelman's neck, has garnered controversy.It has been the subject of extensive commentaries in blogs.The controversy revolves around its emphasis on Yau's alleged stake in the Poincaré conjecture, its view that Yau was unfairly taking credit away from Perelman, and its depiction of Yau's supposed involvement in past controversies.