Guest: Stuart Kauffman.

Our guest today on Focus has become well known for arguing that the laws of complexity in science generate much of the order in the natural world. He says that in his studies of philosophy, medicine, and biology, it is often the most complex and apparently random systems that show spontaneous order. It's a factor at least as important as Darwinian natural selection in producing the life we see all around us. Physician and science writer Stuart Kauffman joins us today to discuss this and more.