Resumen
The aim of this paper is to present the importance of the rules, the importance of those rules that influence economic activity. It will be presented the institutions starting from the "rules of the game" until the "rule of law". Then it will be explained the concept of "spontaneous order" and the importance of that order in society. For a good economic activity, we need a ?good governance?. It will be explained what this means good governance and how addiction affects about institutional change.