Spontaneity in the system or just simply the release of non-advantageous components makes the system evolve. This evolution is the creation of a new generation of the previous system. Evolution of a system is driven by selection processes that effect the growth and stability of the system.
When stating the main idea of a story, you need to make sure you are aware of what the text is talking about. Ask yourself: What is the author trying to tell me through the text?
