With the depositing and specializing process of knowledge，it causes humans to accommodate themselves to this situation. Because the God gives every person a limited time and energy，it is necessary for a person，who wants to make progress in his discipline，to adjust his knowledge structure to adapt to his research domain，that is to say，to be more devoted to his own research area. On the other hand，if he cares too much for unrelated or less related area，he will probably not be able to bring innovation to his main academic discipline. Simply put，we almost cannot find a man who constructs the Theory of Relativity and in the mean time composes symphony like Mozart’s! So we can say every scholar must be more devoted to his own discipline than to others，but a wider knowledge of other disciplines sometimes involuntarily invokes sparks of new ideas.
The structure of human knowledge is just like the complexity of a net，which means various disciplines have interconnections and a progress in one will undoubtedly bring changes to some others，which is because scholars belonging to related areas will probably get useful implication from progress happened in this one. And with this similar process going further，innovations may occur in several other disciplines，which will even bring forth new disciplines. It is obvious that scholars‘ ideas can reach a wide audience by the advantage of the knowledge structure without necessarily reaching wider audiences directly.
