So income inequality is bound to prove politically controversial when it is worsening, and also when it tends to decline. Studies like those led by Lustig can illuminate the inevitable controversies, so that they yield better policies rather than simple acrimony.
因此，收入不平等如果恶化，必然会引起政治争议，收入不平等趋于下降时也是如此。卢斯蒂格所领导的研究可以说明这些难以避免的争议，因此也能带来更好的政策而不是简单的激烈争吵。