A May 2011 Hamilton College analysis of 26 politicians, journalists, and media commentators who made predictions in major newspaper columns or television news shows from September 2007 to December 2008 found that Krugman was the most accurate. Only nine of the prognosticators predicted more accurately than chance, two were significantly less accurate, and the remaining 14 were no better or worse than a coin flip. Krugman was correct in 15 out of 17 predictions, compared to 9 out of 11 for the next most accurate media figure, Maureen Dowd. Foreign Policy named Krugman one of its 2012 FP Top 100 Global Thinkers "for wielding his acid pen against austerity".
Question: How many predictions did Krugman incorrectly predict?
Answer: 2