During the last 15 years I have picked up professional experiences in appearance very different and, besides the most meaningful that I have listed, many parallel runs are not missed. They have all one common denominator: they are always challenges. Or because I contributed to set up a new project and I followed the development of it; or because I was given an adrift ship and I laid in a new course; or because there was a need to break step and to lay down alternative approaches, opening so new possibilities and new perspectives. In all cases, these were changes and novelties, that I always find inspiring, amusing and essential allies of the creativity. I have come to appreciate challenge...