The last five years of economic policymaking in the eurozone have been a remarkable comedy of errors. The list of policy mistakes is almost endless: interest-rate hikes by the European Central Bank in July 2008 and again in April 2011; imposing the harshest austerity on the economies facing the worst slump; authoritative treatises advocating beggar-thy-neighbor competitive internal devaluations; and a banking union that lacks an appropriate deposit-insurance scheme.