constitutional determination, subject to change only by a concerted effort of the political establishment. Nevertheless, a constitution should not mean more than "an invitation for judges to rule as they deem best." 6 Choudhry emphasizes the pivotal nature of judicial decision-making and its justification when he observes: "[C]ourts, because of their central role in legitimizing and validating the exercise of public power, are under an obligation to engage in a process of justification for their own decisions. That obligation extends to courts' interpretive methodologies, because those methodologies define the institutional identity of courts." 7 12 This is true even between systems, which, to the outside observer, appear to be culturally, linguistically and legally "close."