For as long as human beings have walked upon earth, we've tried to make sense of our world and predict what the future will bring. Yet today, our lives seem more complicated and unpredictable than ever. And half the population of the planet now live in busy, sprawling cities. Every day throws up thousands of different encounters. A mass of interactions and forces that seem beyond our control. It's hard to see how any of this could be connected. Yet when we start to look closely at all this complexity, surprising patterns begin to emerge. It's these patterns that I believe point to an underlying Code at the very heart of existence that controls not only our world and everything in it, but even us. As a mathematician, I'm fascinated by the patterns we see all around us. Patterns that reflect the hidden connections between everything. From the movement of rush hour crowds... of a flock of starlings. The cacophony of a billion Internet searches... and the vagaries of the weather. Together, these patterns and connections make up the Code.