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Lower levels of human capital mean that political issues are very different , and as a result , while similar forces are often at work , the Latin American experience has to be treated seriously in its own right . This can be seen in the cross-country evidence where measures of racial diversity strongly predict lower levels of redistribution . At present , if one looks at levels of investment or at research output or at the prestige of leading institutions , the US is clearly leading in the life sciences . The only way to promote sustainable peace , stability , and order in Iraq is to forge an unholy alliance with Iran - - and accept Iran 's dominant influence in the Middle East . One study , for example , found over a nine-year period that 60 % of the poorest Americans were likely to remain poor whereas only 45 percent of the poorest Germans were likely to remain poor . If you bring in new revenue but put all of the net new revenue into personal retirement accounts , then you have a way to spread the burden across even current workers in terms of making extra contributions today , but to do so in a way that you can really be sure is going to be contributing to people ’ s retirement incomes in the future . An alliance with Iran would recognize that the toppling of Saddam Hussein not only freed Iraq 's Shi'ite majority from a long period of Sunni dominance ; it also empowered Shi'ites throughout the central Middle East , shifted the sectarian balance of power profoundly , and aroused Shi'ites in Lebanon and elsewhere to take charge of their confessional and human destinies in new ways . Polls demonstrate that up to one-third of high school biology teachers have as much faith in intelligent design as in evolution . It is certainly true that higher levels of American productivity and productivity growth in the 1990s owe something to the fact that we have a less redistributive state . Japan can best preserve its security by maintaining its alliance with the U.S ., pursuing joint work on missile defense , and joining with others to use the six-party framework to pursue the longer-term objective of a non-nuclear peninsula . At the same time , we accept levels of poverty and inequality that are far higher than in Europe . Liebman : The benefit of having personal retirement accounts in the plan is that if we ’ re going to spread the burden across generations and start putting some extra revenue into the system now , we need to have a way to save that money so that it doesn ’ t get diverted to other purposes , as the current Social Security surplus often does .