Nothing is as obvious as the fact that humanity is made up of diverse entities. Even among those who identify as a group with shared value systems and beliefs, we are all different albeit with some measure of similarities. Over time, psychologists and social scientists who have concerned themselves with studying and understanding human behaviors and personality have categorized people under what they regard as the four basic personality types: You are either majorly phlegmatic, sanguine, melancholic, or choleric in nature. Apart from the...