Robert A. Dahl

Born December 17, 1915, Dahl landed at Yale and stayed, becoming Sterling Professor of Political Science. He founded pluralist theory, the idea that political outcomes emerge from competition among unequal interest groups rather than some unified public will. He introduced "polyarchy" to describe how democracies actually function, then pioneered empirical methods to study decision-making in real institutions - American city halls, councils, the ground floor of power. His behavioralist approach made him the central figure in pluralist scholarship. Alongside that descriptive work, he spent decades articulating what democracy might look like as a "realizable ideal," sketching the constituent elements of a system that could exist, not just in theory. He died February 5, 2014, having rewritten the field's vocabulary.