My Stupidity, overly confident on the Experiment.
Recently I have been busy writing a journal paper about the latest technique in checking the force closure. Since the start of Ph.D. I know that I am very illiterate on the mathematic. I do not have sufficient knowledge on Linear Algebra. Moreover, I am too negligent on the math. The danger is when you think you know something but actually you don't. I feel overconfident in something I should not. It is backfiring on me right now.