I've spent the last several years going around meeting with all the players in this field, from the robot scientists to the science fiction authors who inspired them to the 19-year-old drone pilots who are fighting from Nevada, to the four-star generals who command them, to even the Iraqi insurgents who they are targeting and what they think about our systems, and what I found interesting is not just their stories, but how their experiences point to these ripple effects that are going outwards in our society, in our law and our ethics, etc.