The Thinkers: The Rise of Partisan Think Tanks and the Polarization of American Politics (Studies in Postwar American Political Development): Fagan, E.J.: 9780197759660: Amazon.com: Bookswww.amazon.com The Thinkers: The Rise of Partisan Think Tanks and the Polarization of American Politics (Studies in Postwar American Political Development) [Fagan, E.J.] on Amazon.com. *FREE* shipping on qualifying offers. The Thinkers: The Rise of Partisan Think Tanks and the Polarization of American Politics (Studies in Postwar American Political Development)