Watch Hans Blumenberg - Der unsichtbare Philosoph (2018) : Full Movie Online Free Documentary feature film about the life and work of renowned philosopher Hans Blumenberg (1920-1996). Christoph Rüter gives the word to three of Blumenberg's former students, who today work in very different sectors: As a taxi driver, an ad writer and a philosopher. They give a very personal account of how Blumenberg's thoughts and ideas have informed and inspired them.