This Flash animation was presented by Dr. James H. Fetzer on September 11, 2009, at the International Conference for 9/11 Truth and Justice in Buenos Aires (Argentina). It reveals the basic discrepancies of the US official account of the attacks on September 11, 2001. Dr. Fetzer, founder of Scholars for 9/11 Truth, is a philosopher of science and public intellectual. He is Distinguished McKnight Professor Emeritus of Philosophy at the University of Minnesota Duluth. Dr. Fetzer has pioneered a novel area of research he has labeled "assassination science", which involves the application of principles of scientific reasoning, especially "inference to the best explanation", to evaluate official reports to insure they are not serving the purpose of covering up crimes.