Hello Danilo - I would very much like to visit Sardinia when I am able - that being said, I had not read info from Gianni Pes, but I had read the website and research of Michel Poulain, the French researcher. He lists 7 categories of things the zones have in common, not 9, and his information is much more scientifically-oriented. I just didn't have room in this article to say that the original researchers, M. Pes & M. Poulain, were and are scientists and are not and were not commercializing what they had learned. I will watch the interview!