These are the general conclusions that have been drawn from my immersion in the cognition of the shamans of ancient Mexico. Years after the publication of The Teachings of Don Juan: A Yaqui Way of Knowledge , I realized that what don Juan Matus had offered me was a total cognitive revolution. I have tried, in my subsequent works, to give an idea of the procedures to effectuate this cognitive revolution. In view of the fact that don Juan was acquainting me with a live world, the processes of change in such a live world never cease. Conclusions, therefore, are only mnemonic devices, or operational structures, which serve the function of springboards into new horizons of cognition .