Mathematician Steven Strogatz discusses his new book, Big Math: The Hidden Codes That Run Our World. Strogatz is perhaps best known in his field for his co-authorship of a seminal 1998 paper with Duncan Watts on the collective dynamics of small-world networks. He has also studied chaos theory as applied to physics, the geometry of supercoiled DNA, and the biological collective oscillators, such as swarms of synchronously flashing fireflies and crickets that.