Long ago there lived an old man and he told us a story.
He lived alone on the whole world and he hadn't got any foundations in law, food and so on. He lived in the forest. He was in isolation so there was nobody who could see or speak to him. He could speak the only language and his mother language was the wild nature.
Once upon a time he was visited with a comer from nowhere. The comer's name was Mark. Mark saw the old man and tried to speak to him. But the old man couldn't get him well. Mark used idioms and his mother tongue was strange for the old man. The old man tried to memorize all Mark's words and expressions but he couldn't. Soon they found a common way for understanding. It was a sign language! It was very helpful and useful for the both. The old man listen to Mark very attentively and tried to use some grammar drills for practising. Every of them became an interpreters for each other. Their vocabulary was average and it became growing minute by minute. The old man interpreted from his language and Mark interpreted from his one. Hour by hour they tried to understand one another. They were very friendly and soon they were related by friendship. When they started to understand enough each other Mark invited the old man to the world where Mark was. But the old man didn't accept his invitation. "I am an old-fashioned man,- he said. - I will never realize your world and all up-to-date technologies and a lot of information it. I will be disappointed about your world. Thanks for taking care of me"
Mark didn't insist to go with him because he realized the kind old man won't endure rude people in his world and the world might kill his friend.