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When is trade liberalization desirable (in theory)? We get a negative relationship between s and g even though policy intervention maximizes the growth rate and we would never want to restrain governments from using policy intervention s. Non-operational truisms “I would suggest that the rate at which countries grow is substantially determined by three things: their ability to integrate with the global economy through trade and investment; their capacity to maintain sustainable government finances and sound money; and their ability to put in place an institutional environment in which contracts can be enforced and property rights can be established. I would challenge anyone to identify a country that has done all three of these things and has not grown at a substantial rate.” But: -- Larry Summers (2003) • “ability” to do X and “capacity” to manage Y do not tell us what the requisite policies area • and if we try to give it operational content, it turns out that the immediate implications are not quite consistent with the evidence Open-ended list of complementary reforms A recommendation contingent on all the requisite “complementary reforms”—many of which cannot be specified ex ante--is impractical (and defeats the purpose of reform). X j X i du i j d i i j i i Total effect = direct effect (positive) + sum of all other indirect effects (positive or negative) Low agricultural productivity Price liberalization Private incentives Privatization Contract enforcement Legal reform Fiscal revenues Tax reform Urban wages Corporatization Monopoly Trade liberalization Enterprise restructuring Financial sector reform Unemployment Labor market flexibility And so on... * The (sufficient) condition is that the activity whose tax is being reduced be a net substitute (in general equilibrium) to all the other goods. Source: Heilmann (2008) Growth Diagnostics Reasons for low private investment Low return to economic activity Low social returns High cost of finance bad international finance Low appropriability government failures poor geography low human capital bad infrastructure micro risks: property rights, corruption, taxes bad local finance market failures information externalities: “self-discovery” macro risks: financial, monetary, fiscal instability coordination externalities low domestic saving poor intermediation