If Walter Bagehot was right that "one of the greatest pains to human nature is the pain of a new idea,” Ken caused an extraordinary amount of pain. Both in his economic thinking and in his political activities, he was dedicated to resisting, and where possible overturning, what he famously called "conventional wisdom” (one of his many turns of phrase that have since become commonplace locutions). Rejecting the standard economic theory based on small, anonymous households and firms that autonomously engage in perfectly functioning markets, Ken instead saw an economic stage dominated by large, nameable actors: big business, big labor, big government. Sorting out their roles and respective power was central to his analysis, and the continually shifting tensions in the interplay among them-"countervailing power” in another of his deft phrases-was the real story of how an economy behaved.