Funny. In 1996, Krugman had an entirely different view of long-term structural changes to federal entitlements, including raising the age of eligibility. In a lengthy New York Times book review of “How the Coming Social Security Crisis Threatens You, Your Family, and Your Country” by Peter G. Peterson and “America’s Most Powerful Lobby and the Clash of Generations” by Charles R. Morris, Krugman targeted the very kind of short-term politicization of the entitlement/demographic crisis that he now indulges in. Close your eyes, read Krugman’s words circa 1996, and you might think you were listening to Paul Ryan circa 2011…