This has been going on for a while, with several HN submissions over the years, but this time the article ("Received 17 May 2014, Accepted 19 November 2014, Pub

This has been going on for a while, with several HN submissions over the years, but this time the article ("Received 17 May 2014, Accepted 19 November 2014, Published 20 January 2015") has pictures of the letters that can be seen, still quite fuzzy: http://www.nature.com/ncomms/2015/150120/ncomms6895/images/ncomms6895-f3.jpg http://www.nature.com/ncomms/2015/150120/ncomms6895/images/n... http://www.nature.com/ncomms/2015/150120/ncomms6895/images/ncomms6895-f4.jpg http://www.nature.com/ncomms/2015/150120/ncomms6895/images/n...