Recently, I have started applying to graduate schools for a PhD. I have received one rejection letter already. It was written in a very ,say, measured (if that is the right word) way such that it only pulls you by a thin thread from falling off into a deep cliff of depression. It was a really nice and kind gesture. Others had specified that they will get back if they would like to interview me. Fair enough. But for me, this experience marks the beginning of the second most faced situations in the life of researchers-getting rejected. From journals, editors, publishers etc etc. (concentrated optimism dripping all over, I know)The first one is, in my honest opinion, is the developing a habit of contesting an idea. I had joined The Institute of Mathematical Sciences, Chennai, in 2016 for a PhD program and did a Molecular Dynamics simulation project. This is more of physics than what I had imagined. The techniques and training people need to do this kind of job is very different from w...