Lieberman (2002). Ideas, Institutions, and Political Order: Explaining Political Change.

Institutionalist and Ideological approaches are both limited.

There is too much emphasis on order... there is no way to explain episodic changes?

We need to incorperate both into a theory. Institutions and ideas alone cannot explain major political changes... but together, an explanation can arise. "analysis that takes both ideas and and institutions seriously will almost of necessity she light on points of friction, irregularities, and discontinuities that drive political change" (Lieberman 2002, 698).