Let us assume a situation when you as a student is trying to get admission without any knowledge of past records in the field of academics or results of that particular school/college, or a situation when a stock trader is purchasing stocks without any idea of the past performance of that specific stock. You will probably call this insanity. Why would anyone walk into any college having no past records or why any trader will purchase nasty stocks without analyzing its past performances, we have graphs, we have data, we have records, isn’t it? From the very first day of our life, our parents start maintaining our data but for whom? What’s the role? Why is it so? Well, to understand the role of data, we have to understand the purpose it serves not only to me, not only to you but probably all single species who can extract a conclusion from a set of organized or non-organized data. Today, humans have become so dependent on data that they cannot do any constructive and social work without ...