One of the main characters in Tangled Roots is a man with the nondescript name of John.  John is forty years old, single, and a Professor of Theoretical Physics and Cosmology in a leading American university. He relates to numbers the way we writers relate to words.  They express his thoughts and emotions and explain his world.  When he talks about his life, his narrative is peppered with metaphors that come out of a world view formed by years of experimentation and theorizing.  In other words, he lives in his head.  Trying to sleep after a drunken night out he says

The room’s spin slowed down to a gentle flow.  Flow — now there was something I understood.  I pictured the diagram about p-branes on page 137 of my latest book. Like ruffled sheets of copper, branes of p-dimensions were flowing in waves through the flatness of spacetime.  Watching them, I eventually fell asleep, as they drifted everywhere, nowhere, endlessly and back again.

John’s trajectory in the novel leads him from the realization that it takes more than just a brain to make a man, and to the discovery and integration of those other parts of him that he had been avoiding for years.
So, the obvious questions, which I have already been asked, are — am I a scientist?  Do I have a background in physics?  And the answer of course is no, absolutely not.  I chose physics because it seemed to me the closest that scientific enquiry gets to spirituality (although most physicists would hate to have me say that) and spirituality is another important theme of the book.  But I, personally, knew nothing about it, and understood even less.  So I started to read every “popularized” book on cosmology that I could find.  Then I read it again.  Then I wrote things down (thankfully, John was enough of a teacher to insist that a glossary be included in the back of the book).  And every time I thought I understood something, I found that 5 minutes later it was gone.  It was like living in the midst of that old Abbott and Costello routine :  “I got it.  I got it.  I don’t got it.”  But what fun!  And through my research I became aware of the work of some remarkable scientists.  Stephen Hawking, of course.  But also Brian Greene, Lee Smolin, and especially, Joao Maguejo, a Professor at Imperial College who was kind enough to let me take him out to dinner and ask him a million questions.
Physicists, I found, are a different sort of people.  They can see things that people like me can not see.  They can understand things they don’t have words for.  They amaze me, and one of the greatest pleasures for me of writing Tangled Roots was to dive into a brain like that and create a character whose vision is so much different from my own.
Of  all such scientists, one of the wildest who ever lived was Professor Richard Feynman, a cowboy in his work and his life.  If you don’t know about him, I urge you to discover him.  Here’s a glimpse into his mind:

And here, a glimpse into his heart: