This puts us in a position, for the first time, to say something definitive about extraterrestrial civilizations — if we ask the right question.
因此，关于外星文明，我们第一次可以说出一些确凿的东西——如果我们问对了问题的话。
If we ask people how old they are, there is often the same infuriating vagueness - "more than 20".
如果我们问他们多大了，答复也往往同样是令人撮火的模糊不清——“20多了”。
If we ask the best computer algorithms to look at natural objects or images to identify them, they approach a success rate of 70 to 90 percent.
如果我们采用最好的计算算法研究自然物体或者图像来辨别他们，成功率接近70% - 90%。
If we ask what made memes different from genes, would that help us decide what would make a new replicator different from memes?
细想一下模因与基因的不同之处，会不会有助于确认一种新型复制因子与模因的差异所在呢？
If we ask what made memes different from genes, would that help us decide what would make a new replicator different from memes?
细想一下模因与基因的不同之处，会不会有助于确认一种新型复制因子与模因的差异所在呢？
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