<p>That law should be based on fairness is an axiom of our age. The premise of many policies is moral: The prohibition against murder reflects the Judeo-Christian conception of human beings made in the image of God and possessing transcendent value. But in "Fairness Versus Welfare," Louis Kaplow and Steven Shavell, both Harvard law professors, challenge this conventional wisdom. They argue that what matters most is whether a particular policy promotes the general welfare, saying "we discover very little basis for the use of notions of fairness as independent evaluative principles."</p>