Let’s start with the three fundamental Rules of Robotics – the three rules that are built most deeply into a robot’s positronic brain. We have: One, a robot may not injure a human being, or, through inaction, allow a human being to come to harm. Two, a robot must obey the orders given it by human beings except where such orders would conflict with the First Law. And three, a robot must protect its own existence as long as such protection does not conflict with the First or Second Laws.