the Logo Foundation research group is to strengthen the ability to learn knowledge. Papert insisted a simple language or program that children can learn—like Logo—can also have advanced functionality for expert users. Other work As part of his work with technology, Papert has been a proponent of the Knowledge Machine. He was one of the principals for the One Laptop Per Child initiative to manufacture and distribute The Children's Machine in developing nations. Papert also collaborated with the construction toy manufacturer Lego on their Logo-programmable Lego Mindstorms robotics kits, which were named after his groundbreaking 1980 book. A curated archive of Papert's articles, speeches, and interviews may be found at The Daily Papert. Personal life Papert became a political and anti-apartheid activist early in his life in South Africa. He subsequently chose self exile. He was a leading figure in the revolutionary socialist circle around Socialist Review while living in London in the 1950s. Papert was also a prominent activist against South African apartheid policies during his university education. Papert was married to Dona Strauss, and later to Androula Christofides Henriques. Papert's third wife was MIT professor Sherry Turkle, and together they wrote the influential paper "Epistemological Pluralism and the Revaluation of the Concrete". In his final 24 years, Papert was married to Suzanne Massie, who is a Russian scholar and author of Pavlovsk: The Life of a Russian Palace and Land of the Firebird. Accident in Hanoi Papert (then aged 78), received a serious brain injury when struck by a motor scooter on 5 December 2006 while crossing the street with colleague Uri Wilensky when they were both attending the 17th International Commission on Mathematical Instruction (ICMI) Study conference in Hanoi, Vietnam. He underwent emergency surgery to remove a blood clot at the French Hospital of Hanoi before being transferred in a complex operation by Swiss Air Ambulance (REGA) Bombardier Challenger Jet to Boston, Massachusetts. He was moved to a hospital closer to his home in January 2007, but then developed sepsis which damaged a heart valve, which was later replaced. By 2008 he had returned home, could think and communicate clearly and walk "almost unaided", but still had "some complicated speech problems" and was in receipt of extensive rehabilitation support. His rehabilitation team used some of the very principles of experiential, hands-on learning that he had pioneered. Papert died at his home in Blue Hill, Maine, on 31