Each of the 19 chapters is an attempt to explain Anna's surgery and her answer back from you know earlier in this interview. So each of the chapters is kind of me. Ghost writing might be a slightly inaccurate term, but kind of ghost writing as if I'm collaborating with the person whose idea it is or whose theory it is. And so that story comes from Sydney Brenner who was a contemporary of Francis Crick  and was one of the popularizer of C elegans the worm as a model for neuroscience.