robots are their computer brains, they can do work that smart. With dirty, or boring. Some humans prefer not to do because it is dangerous, robo that robots are taking jobs away from people. Bobby is a mail carrier are mail to a large office building in Washington, D.C. There hundreds of mail carrier robots in the United States In more than sev around the world, robots called Help Mates take medicine down halls, call elevators, and deliver meals. In Washington, D.C. a tour for at the Smithsonian museum is robot called Minerva. Abou 20 percent of the people who met Minerva said that she seemed as intelligent as a person. There is even a robot that is a teacher is a fourth-grade teacher He weighs 200 pounds Mr. Leachim is six feet tall, and has some advantages as a teacher. One tage is that he doesn't forget details. He knows each child's name, the parents names, and what each child knows and needs to know. In addition, he knows each child's pets and hobbies. Mr. Leachim doesn't make mistakes Each child tells Mr Leachim his or her name and then enters an identification number. His computer brain puts the child's voice and number together. He identifies the child with no mistakes. Then he starts the lesson.