“…In their study of the Japanese and European law, Kelemen and Sibbitt likewise observe the spread of American law+ For them, the demand for U+S+-style law emerged primarily because of the growing utility of legal representation in an increasingly liberalized marketplace+ 114 By treating this liberalization as an exogenous factor, they overlook important mechanisms that vary in their capacity to explain the spread of different legal norms and practices+ For example, our discussion shows how the spread of American procedure came after years of failed stateled programs+ After 1945 American policymakers had limited success exporting law, despite the hegemonic position the United States enjoyed in different parts of the world+ Unilateralism did not establish a focal point+ By contrast, during the past two decades U+S+-style litigation spread even though it was often despised and belittled abroad+ Causal mechanisms such as efficiency, access to justice, and unobtrusive persuasion varied by issue and jurisdiction+ Operative mechanisms were of different types, involved scale shifts, and operated at different levels of abstrac-tion+ 115 Gambetta's analysis of the concatenations of different mechanisms is particularly relevant to our findings+ 116 Legal systems and their reforms are elastic traditions of practice and discourse, the result of political battles fought by lawyers, intellectuals, politicians, and bureaucrats+ 117 It follows that local and global legal norms and practices are not fated to converge on a single developmental trajectory modeled on the American system+ Rather, in complex processes of interaction, legal practices and discourses evolve that reflect and justify different strategies, including maintaining, adapting, or transforming domestic law+ Rationalist explanations push toward premature closure of analysis+ Our two cases, whereby the efficiency gains of class action and the high costs of pretrial discovery both penetrated civil legal systems, uncover a mix of mechanisms that place parsimonious explanations of efficiency in relation to other mechanisms such as access-to-justice norms and unobtrusive persuasion+ Concatenation gives us better leverage on the data than parsimony+ Our analysis invites one final reflection on the unresolved tension that exists in international legal and political scholarship about the difference between common and civil law systems+ Economically inclined theories of the movement of legal norms and practices point to efficiency as the force behind the dynamic expansion of American law+ Sociologically inclined theories point to differences in legal systems' receptivity to new norms and practices and the different meanings they acquire in the process of translation into a new legal ecology+ Numerous studies provide adherents of both perspectives with ample data to support their claims+ Imagine 114+ Kelemen and Sibbitt 2004, 109+ 115+ Tarrow 2005, 120-24+ 116+ See Gambetta 1998andTwining 2005, 205-6, 213-14+ 117+ Leheny andLiu 2010+ the transnational movement of law as an ocean wave, with different legal systems marked by differently colored corks floating on top+ Americanization moves the wave in one direction, while Europeanization, Islamicization, Sinicization, Indianization, or Japanization might have moved it in another+ The corks bob up and down, with some drifting closer together, others further apart+ Whether standing on solid ground on the shore or floating on a raft among the corks, after the wave passes observers will report, in good faith and based on accurate o...…”