Sorry Prabir, because of problems with my laptop I could read your comments only today. As you say normally I follow the academic method. In the case of Darampal's book, I did the same but found the documentation too weak for the conclusions. So I decided to set it aside even while acknowledging that it has some positive points. I was not reviewing that book. I was reading it for myself and saw no sense in preserving it since I did not think of it as a valuable enough docume in spite of some of its positive points.