Is an economy with adverse selection, moral hazard, or an incomplete set of risk markets "constrained" Pareto efficient? There are two sets of papers addressing this question, one asserting that, under seemingly quite general conditions, the economy is constrained Pareto efficient, the other (to...

For more than a hundred years, economists have attempted to show that progressive taxation can be justified on more fundamental principles. Among the earliest of such attempts was that of Edgeworth (1868, 1897), who tried to show that utilitarianism (combined with two other assumptions) implied...