4. "No field of study can advance significantly unless outsiders bring their knowledge and experience to that field of study."
在任何一个研究领域当中，除非有该领域之外的人引进他们的知识和经验，否则该领域就很难获得巨大的发展。
Outsider: a person does not belong to a particular group
闭门造车，旁观者清
1 没有任何学科是单独发展起来的 每一个学科都需要借助别的学科的知识 比如物理 太空探索
2 随着科学的发展 每个学科都会出现很多更加细致的专业划分 同时也出现了交叉学科 这些专业学科的发展可以更好的促进科学进步 而使这些专业学科更好的发展就必须引进别的学科的知识和经验 比如生物医学 就必然需要掌握生物和医学两个学科的知识
3 然而 单单依靠别的领域的人的知识来发展自己领域 而不努力钻研本领域的知识也是不可以的 要想更好的发展和进步，最重要的还是要保证对本领域的知识的充分掌握。
The author claims that without outsiders bring their knowledge and experience, filed of study can not advance. I agree with this point. Every thing has a various relation with each other.
First of all, no filed of study can develop itself without other experience and knowledge. Every filed of study’s development is base on some other knowledge. For example, if people want to research cultural relic, they must learn art, history, language, and custom about the relic which they want to research. And they must learn how to write a good paper which can make a lot of people understand their research. Another example is physics. It is obviously that many physical scientists are mathematicians, because physics often need mathematics to solve its problems. Expressions of physics need mathematics to express their means. If Newton does not learn mathematics, he can not give the law of gravitation.
Second, in this era of rapid social and technological change leading to each field of study grows many special subjects, and various crossed subjects appear. The crossed subjects often take advantage about different science, and improve scientific development. For example, biological information is a subject about biology and computer. People, who want to research it, must learn biology and computer science. When they settle biological problem, they should know the key about the problem with theory of biology, and then, design a program to solve it. They should give data about biological examination to prove result form the computer is right. So, the progress about biological information would lead biology and computer science developing.
However, it is very important that researchers should study their own field careful. If they only learn other fields of science and do not care their own field, they can not make it advance. Other fields of science just are tools about their research science. A clever researcher must learn most things from different areas, and uses them into his/her own subject.
In sum, no area of science can develop with its own. All of sciences are related. The advance of a field must improve other fields’ progress.作者: 蚱蜢舟 时间: 2005-8-12 09:58:59 标题: ：）
The author claims that without outsiders bring their knowledge and experience, filed of study can not advance. I agree with this point. Every thing has a various relation （various relaions 好些吧）with each other.
First of all, no filed of study can develop itself without other experience and knowledge. Every filed of study’s development is base（d） on some other knowledge. For example, if people want to research cultural relic, they must learn art, history, language, and custom about the relic which they want to research. And they must learn how to write a good paper which can make a lot of people understand their research. Another example is physics. It is obviously that many physical scientists are mathematicians, because physics often need mathematics to solve its problems. Expressions of physics need mathematics to express their means.不太明白也 If Newton does not learn mathematics, he can not give the law of gravitation.
Second, in this era of rapid social and technological change leading to each field of study grows many special subjects, and various crossed subjects appear. The crossed subjects often take advantage about different science, and improve scientific development. For example, biological information is a subject about biology and computer. People, who want to research it, must learn biology and computer science. When they settle biological problem, they should know the key about the problem with theory of biology, and then, design a program to solve it. They should give data about biological examination to prove result form the computer is right. So, the progress about biological information would lead biology and computer science developing.
However, it is very important that researchers should study their own field careful. If they only learn other fields of science and do not care their own field, they can not make it advance. Other fields of science just are tools about their research science. A clever researcher must learn most things from different areas, and uses them into his/her own subject. （总觉得指点有点站不住脚．．，个人意见）
In sum, no area of science can develop with its own. All of sciences are related. The advance of a field must improve other fields’ progress.