As of May 30, 2011, the criticisms are available on Science XPress (Science's pre-print publication venue): http://www.sciencemag.org/content/early/recent http:

As of May 30, 2011, the criticisms are available on Science XPress (Science's pre-print publication venue): http://www.sciencemag.org/content/early/recent http://www.sciencemag.org/content/early/recent The full-text PDFs appear to be free/public access.