There is a group of individuals who are radical jihadists. We need to call them by name. They believe it is OK to kill people in the name of their religion. It is not all of Islam. It is not all Muslims. But there is a subgroup who believe it is OK. In fact it is their plan and design to kill people.
People don't want to believe that technology is broken. Pharmaceuticals robotics artificial intelligence nanotechnology - all these areas where the progress has been a lot more limited than people think. And the question is why.