Coercive redistribution and diversity in the interests of its constituent groups are essential features of the modern welfare state. Disagreement over perceived consequences of social policy creates the demand for publicly justified “objective” evaluations. If there were no coercion, redistribution and intervention would be voluntary activities and there would be no need for public justification for voluntary trades.

−James J. Heckman (winner of the 2000 Nobel Prize in Economics), “Accounting for Heterogeneity, Diversity and General Equilibrium in Evaluating Social Programs,” National Bureau of Economic Research Working Paper No. 7230, July 1999.