David Walton is the author of Quintessence (which I highly recommend) and Terminal Mind, which won the 2008 Philip K. Dick Award for best paperback science-fiction novel that year. David recently took some time out to answer some of my questions and to let us know what he is currently working on. More information can also be found at his website. One commenter will win a hardback copy of Quintessence.
Bill Capossere: Why did you set Quintessence in the sixteenth century?