Imagine [applause] this. You're about to give an important presentation. Your heart starts racing.You start questioning your life choices. What was I thinking signing up for this. How did I get here.Well, let me tell you there's a bit of chaos theory at work. My first presentation was at university. I was a freshman in the physics department and I had spent a lot of time preparing for it.It was about the lifeies of several legendary physicists. I felt totally ready. But when the time came, my whole body ros ...