Necessary Knowledge takes on one of the big questions at the heart of the cognitive sciences - what knowledge do we possess at birth, and what do we learn along the way? It is now widely accepted that evolution, individual development, and individual learning can no longer be studied in isolation from each-other - they are inextricably linked. Therefore any successful theory must integrate these elements, and somehow relate them to human culture. Clearly we learn from the world around us, but that learning is skewed towards specific things about the world. We do not just attend to and learn...