Mathematics is one of the most inscrutable scientific disciplines. Not only is the language of math difficult for a lay person to penetrate, it is also often not obvious why it is relevant to everyday life. In fact, math is both ubiquitous and central to many technologies that we rely on every day. A fair number of math applications are known to most people, but others are less obvious to us, such as the role it plays in medical devices, finance & business analytics, architecture, logistics and even Hollywood movies. In this talk, Prof Chan talks about the math behind some life-changing findings. He also cites examples of some unexpected roles that math plays in our everyday lives.