The use of koans is one method to conduct the local darkness to the global light and the enlightenment. This use is also a kind of mental shock dedicated to the liberation of the mind from society’s bounds. The enlightenment needs another step with the second one. The first one is the creation of the relation and the second of the link. It’s a new understanding of the reality of the world with the opening of a universe. The key is the necessity of transcendence to solve the problem of reality. In other words, if you stay at the same level you will have the same problems because the solution is elsewhere.