It's not because we're not Nobel Prize winners that we shouldn't disagree with the author, and I'm sure there are many well-known economists out there who won't

It's not because we're not Nobel Prize winners that we shouldn't disagree with the author, and I'm sure there are many well-known economists out there who won't agree with him. There are plenty of economists who don't agree with Krugman. But they would disagree for actual reasons instead of "OH NOES THE WORD LIBERAL APPEARS IN THIS COLUMN".