The Krugman/DeLong issue will never go away, sorry to say. Apparently the advancement of one person's political ideas is far more important than understanding or advancing economic science. I was washing dishes and listening to Bob Dylan's "Live 1966," album, which put this analogy into my mind.
In 1965 Bob Dylan took traditional American folk music and blues, mixed in Arthur Rimbaud, and harnessed the whole thing to technology. Robbie Robertson told him what electric guitar he should buy, he bought a suit in Toronto, and went on the road with some Ontario musicians, later known as the Band. Bob did not get the reaction he expected. Some people were very upset at the change, and tried to boo him off the stage. Partly they did not get the technology. But there were some people who went to those shows and thought they sounded great. Some of those people went home, bought their own electric guitars, basses, drums, etc., figured out how to use the technology, started their own bands, and wrote their own songs. Eventually a lot of people started to get it, but of course there were a few naysayers who continued to think that Bob just could not sing.
Now fast forward to 2011. Bob is still playing. He's a little wrinkly and the voice is coming out in a croak, but he's still making records and showing up for work. The guy deserves a pat on the back for still being into the music. You go to his show, and what happens? There are two guys in the back, booing. What's the complaint? These two are complaining that Bob has abandoned Irving Berlin, does not even bother to listen to Irving Berlin in order to appreciate him and, furthermore, Bob doesn't even understand his own lyrics. Who are the guys? It's Peter Frampton and Barry Manilow.
Meanwhile there is whole music festival going on in Austin: South by Southwest. Frampton and Manilow know about it, but they want to pretend it does not exist. They are certainly not in Austin participating. That festival is where the action is. The musicians are creative and interesting, and they're all talking to each other. People are listening and enjoying it. Little pieces of Bob Dylan are all over the place. These musicians have learned from him, added stuff, and gone in some entirely different directions. And they certainly are not thinking about Frampton and Manilow.