Historical Review:

In the case  of historical  reviews  our job  is to  describe  what  happened  in the  past so that  we can  understand the present or plan for  the future. Here we go through existing  records and reports and talk to different people to get as true  a picture as possible. The archives are reviewed with a rather interrogative manner and with a particular research question / problem  in mind. The  main problem with using such  a method is that  we have to rust human  memory. Which  records selective parts of our reality . it is  quite possible  that two  different people  while  going through  a certain situation or experience, will record  or remember different   things sometimes they make mistakes or misunderstand. It is therefore important that while using such  a method we should  cross check  on written source with another or a written source with an  interview or two interviews with  each  other. In  other words  we have  to be  critical and compare different  explanations  for the  situation  or event.