That was quite an interesting read... I was astonished by how awful their response to the criticism was: https://krugman.blogs.nytimes.com/2013/04/16/reinhart-rogoff...

Personally, that just killed his credibility.

Oh, the author was one of those two? Nope, no credibility; not because of a mistake (though such sloppiness would qualify for a credibility loss), but because of how they handled criticism, as linked by sibling comment.

The criticism of an unrelated study by Prof. Rogoff were politically motivated as well. No one is free of political bias. And no study, especially in economics is beyond criticism. As the article notes, the authors freely acknowledged and also responded to criticisms which they believed were unwarranted. But all that is not related to the points addressed in the article. As it happens, Ken Rogoff's accomplishments, which are considerably more extensive than the brief bio at the end of the article, are more than sufficient to rebut unrelated criticism. Regardless of your political views, discounting or ignoring Ken Rogoff's views on economic matters is a mistake.