In the book The Ear,The Eye, and The Arm the natural is banished or distrusted because everything has to do with technology. A lot of crime goes on it seems like it because the father had to save the president from tarriest. The world is not natural because there is robots and no real animals. It's also distrusted because they cant hear real birds sing, An barley no one has a real bird. They have a mechanical dog so it's not a real dog. It's distrusted because they had to smuggle a real bird to there house. It seems like they banished a lot of the natural world. I think the dad is so strict because the world is so distrusted and banished. The kids have to take a martial arts class protect themselves.