xviii Mario Mazza went out of the room leaving his brother resting and, after a coffee, he went to speak with the nurses, hoping that the doctors were free too. He managed to make an appointment with doctor Parri for the day after at noon and, when the time came, he asked the anaesthetist some questions. “Fist of all I thank you for giving me some of your time”, started the man. “Don’t worry”, said the other one. “Here, you see, I wanted to ask you a few things. I’ve been able to talk to my brother, to stay a little bit with him; but I was surprised when he told me he couldn’t remember any accident that involved him.” Doctor Parri stayed a few moments without saying a word, then he answered: “I see. You know, it can happen, even though it’s rare, that a patient loses temporarily his

