A fictional killer robot in the film "Terminator 2: Judgment Day." In reality, researchers are less worried about a robot uprising and more concerned about how development of lethal autonomous weapons that take responsibility for killing out of human hands. Credit: Studio Canal | Carolco Pictures Notable tech leaders and scientists have signed open letter petitions calling for a ban on lethal autonomous weapons powered by artificial intelligence technologies. But a group of AI researchers recently went a step farther by using the threat of boycott to discourage a university from developing so-called killer robot technologies. It all began in late February when a