>A very, very small quadcopter, one inch in diameter can carry a one-or two-gram shaped charge,” he says. “You can order them from a drone manufacturer in China. You can program the code to say: ‘Here are thousands of photographs of the kinds of things I want to target.’ A one-gram shaped charge can punch a hole in nine millimeters of steel, so presumably you can also punch a hole in someone’s head. You can fit about three million of those in a semi-tractor-trailer. You can drive up I-95 with three trucks and have 10 million weapons attacking New York City. They don’t have to be very effective, only 5 or 10% of them have to find the target. I think this is my new favorite quote of all time.