welfare costs
... that Nobel Prize Economist Robert Lucas estimated that the welfare costs of the business cycle in terms of social welfare are negligible?
... that <a href="./Nobel_Memorial_Prize_in_Economic_Sciences" id="mwCIY" rel="mw:WikiLink" title="Nobel Memorial Prize in Economic Sciences">Nobel Prize</a> <a href="./Economist" id="mwCIc" rel="mw:WikiLink" title="Economist">Economist</a> <a class="mw-redirect" href="./Robert_Lucas,_Jr." id="mwCIg" rel="mw:WikiLink" title="Robert Lucas, Jr.">Robert Lucas</a> estimated that the <b id="mwCIk"><a class="mw-redirect" href="./Lucas_Welfare_Cost_of_Fluctuations" id="mwCIo" rel="mw:WikiLink" title="Lucas Welfare Cost of Fluctuations">welfare costs</a></b> of the <a href="./Business_cycle" id="mwCIs" rel="mw:WikiLink" title="Business cycle">business cycle</a> in terms of <a href="./Social_welfare_function" id="mwCIw" rel="mw:WikiLink" title="Social welfare function">social welfare</a> are negligible?