The Comanche would not have been unable to comprehend the Predator and its technology, let alone figure out how to use its laser guided targeting system to defeat one. There is an incredible book written by a man held captive by a Comanche tribe, who survived for three years by using his pocket watch to dazzle and entertain his captors. Everyone else captured was killed / tortured to death, but as he was traded from one group to the next, he used the watch to convince them that it was possessed by a spirit being. He purchased the watch a day before setting out on his journey across the plains. One very fortuitous purchase!