(Please welcome author Paul Krugman, who is with us today in the comments -- jh) Paul Krugman’s Conscience of a Liberal is required reading for progressives. heading into the 2008 election year. Here, in lucid prose and compelling logic, is a core narrative that every progressive should master. Krugman, one of the most gifted economists of his generation, and now a prize-winning columnist at the New York Times, focuses on the