Interpretations of 2001: A Space Odyssey the myriad mysteries of cosmic intelligence anathema. The film has been seen by many people not only as a literal story about evolution and space adventures, but as an allegorical representation of aspects of philosophical, religious or literary concepts. Friedrich Nietzsche's philosophical tract "Thus Spoke Zarathustra", about the potential of mankind, is directly referred to by the use of Richard Strauss's musical piece of the same name. Nietzsche writes that man is a bridge between the ape and the Übermensch. In an interview in the "New York Times", Kubrick gave credence to interpretations of 2001 based on "Zarathustra" when he
Interpretations of 2001: A Space Odyssey machines". Kubrick was also confronted with the fact that, during the production of the film, the US and USSR had agreed not to put any nuclear weapons into outer space by signing the Outer Space Treaty. Alexander Walker in a book he wrote with Kubrick's assistance and authorisation, states that Kubrick eventually decided that as nuclear weapons the bombs had "no place at all in the film's thematic development", now being an "orbiting red herring" which would "merely have raised irrelevant questions to suggest this as a reality of the twenty-first century". In the Canadian TV documentary "2001 and Beyond",