Anyone who is already an expert in one specific subject must be in need of a little more knowledge of other subjects to gain a deeper thoughts of your specialized area sothat you can develop a multiple choice to solve the problem. That is why we often say that having some knowledge of economy makes you a better psychologist(or having some knowledge of psychology makes you a better English teacher.)
Anyway,having a broad knowledge of many academic subjects makes you always a curious people. It will give you much more options to choose which subject suits you most. It also makes it possible for you to develop a variety of interests and be an attractive man.Supposing you have just watched a movie, your curiosity about this fascinating picture made you wonder the procedure of making a film, so with the question, you started to explore anything about an film: the screen writer, the director, the shooting techniques even the performing techniques of the actors，each of which made you deeply fascinated. And when you were talking with someone else, you surprisngly found that you have much more to talk about than before, your knowledge in shotting a filming helps you gaining a lot more friends of the same Interest. Then some day, as a writer, it suddenly occured to you that maybe the knowledge in filming is a good reference for you to create a new work——so there you go, another great work is born this way.
If you want to be a good expert in one area, you need to know something to do with your specialized subject, hence, in other words, you need to develop a broad knowledge of many academic subjects. Being an interdiciplinary talent is a precondition, a basis, an extension of being an expert of just one specific subject.
