I am a former engineer in topography (ESGT Paris 80) and specialized later in metrology or very precise measurement (CERN). I was interested in quantum metrology for a while... I live mostly between California (Santa Monica), Provence-Cote d'Azur (Where my children and grandchildren live) and Sweden (South West Skåne) with my loving wife. I am managing (investment manager) a large and old private family fund and trade personally a medium-size portfolio for over 25 years “Logic will get you from A to B. Imagination will take you everywhere.” Einstein.