It's very important to understand the history of something so as to clearly understand its evolution. If you closely study our society or the general behaviour of humans over centuries, you will notice that they have always been heavily influenced by many external factors including other people, environments, situations to name a few. Our friends, family and work peers generally exercise a high level of influence in helping us navigate some of the most crucial decisions of our lives, including what we study, what we do professionally, who we love and almost everything else.