Hey! I HEARD that!The impulse to ridicule technological advances and the people who promote them is a deep one (how many movie scientists who purported to help humanity have been torn asunder by their creations?). So, when San Francisco police were alerted to gunfire over the weekend in the Hunters View projects by the Shot-Spotters system, yet couldn't even find the victim -- discovering Darren Johnson's lifeless body was left to area residents at daybreak Monday morning -- the schadenfreude-o