In the opinion of our, that the things that made the think outside is the experience of life. May be due to human studies recognize things around. For example, the education, reading from the books, go to different places, and listening experience from others and to experience it yourself. Since humans are social animals, we must be at the base of society. It was underlined by its rules and culture. It makes to difficult for outside the box, because in reality, we don't live only in the world.