The aim of a research is basically to find an explanation. For all practical purpose, that simply means searching for a new idea. So, how does one go about finding a new idea? Just by thinking about it, and write it down? That’s part of it. But it is much more than that. New ideas often emerges from the already existing ideas. As such, reading and reviewing what other people have done is an important part of the research. Also, how do you know that your ideas are new without knowing the already existing ideas?