I am a former engineer (ESGT A&M Paris 80) and specialized later in metrology or very precise measurement (CERN). I was interested in quantum metrology for a while... I live mostly in Sweden with my loving wife. I was managing an old private family Portfolio -- now officially retired -- and trade personally a medium-size portfolio for over 30 years. “Logic will get you from A to B. Imagination will take you everywhere.” Einstein.