Note: This section provides my view on several topics. In each blog, I shall provide the original source of information. I personally believe that the essence of a story/concept is bound to be missing when retold by a third person (which in this case is me). So please go to the main source of information. In case you feel that the original source is difficult to follow, you may use my blogs as an auxillary material but please note, I might have the wrong impression of the concept !!