The discussions have the next structure: 1. A brief description of the current. 2. The context of debate in which the current, the roots, the history of the movement with its authors and ramification, have appeared. 3. Presentation of the main studies. 4. The main thesis profoundly presented. 5. Critics. 6. Speculations regarding the value of the current, the political use, its future, its possibilities and its practical effects.