Is there a danger that America will choose, in the end, to retreat behind a different kind of shield-not one that guards against missiles, but one that aims to shut out the world?
美国能否最后选择退避到另一种防御体系的保护下，这一体系不是为了防导弹，而是将世界拒之门外。这一危险存在吗？
And one of the bad things is that you end up with information very much tailored to your taste: you never see anything much outside the boundaries you choose!
但是它的坏处是，最终得到的信息非常符合您的喜好：您不会看到任何超出您选择范围的东西！
Depending on which one you choose to point back to, you will end up with different alignments (but all with the same score).
如果绘制的箭头指向不同的单元格，最终就会形成不同的比对(但是得分都相同)。
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