3. 必须承认,一些看似没有实用性的东西,如人类探索外太空,但是从长远来看,这是对人类有巨大意义的。是我们制造有实用性东西的理论基础,比如数学,比如物理,如果没有这两个理论的话,那么就不可能发明电脑。比如文学literature,绘画,音乐它们虽然没有什么实用价值,但是它们丰富了我们的生活。我们对太空的探索,对人类长远发展来讲都有好处。
129. Technology is a necessary but not always a positive force in modern life.
115. It is through the use of logic and of precise, careful measurement that we become aware of our progress. Without such tools, we have no reference points to indicate how far we have advanced or retreated.
9. Academic disciplines have become so specialized in recent years that scholars ideas reach only a narrow audience. Until scholars can reach a wider audience, their ideas will have little use.
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