A quickie explanation of how this “formula” which so many of us rote-learned in school came about In this video Khurshed Batliwala, fondly called as Bawa, explains the reason behind this. With a Masters in Mathematics from IIT, Bombay, India, Khurshed is a faculty of The Art of Living founded by His Holiness Sri Sri Ravi Shankar. According to Bawa he thought it is better to teach people how to breathe and make them happy than teach them Mathematics and make them miserable. Though his maths classes are equally engaging and fun.