Apropos my last post, here is one from Brad DeLong, who like Paul Krugman is hung up on defunct schools of thought. Note that he thinks my colleague David Levine is a member of the "Chicago School," in spite of the fact that Levine received his PhD from MIT, just down the road from Brad's alma mater. David was supervised by Peter Diamond, a well-known liberal Democrat. David has worked with Drew Fudenberg, who is employed by Brad's alma mater, and David has also worked with Tim Kehoe, who we learned (from a commenter on my last post) is a lifelong Democrat. David also spent a considerable part of his career working in the UC system, where Brad currently finds himself.
As for the other quotes in Brad's post, the questioning of Keynesian economics is just science at work. The modern liberal agenda does not somehow hang on the issue of whether Keynes was right.