In this video, Motley Fool industrials analyst Blake Bos gives us some of his key takeaways from the recent AUVSI Unmanned conference, to show investors what the biggest hurdle is before robotics can advance to the level that's been imagined by Hollywood for decades. He also tells investors what the most important things to follow will be as new innovations come along, picks out some key players for investors' watch lists, and discusses why he personally may stay on the sidelines for now in this tricky industry.