Krugman does not have a nobel prize in the subject. Krugman's nobel prize is in another area in Economics, not monetary policy. His contributions are mainly in

Krugman does not have a nobel prize in the subject. Krugman's nobel prize is in another area in Economics, not monetary policy. His contributions are mainly in trade, which were very important no doubt. But it doesn't make him an expert on monetary policy and inflation. I understand that Economics may look like a single-blob to outsiders, but Economics has a wide range of topics and sometimes they barely intersect.