Technologies in 2001: A Space Odyssey station window is clockwise when Floyd is greeted by a receptionist, but counterclockwise when he phones his daughter. Over fifty organizations contributed technical advice to the production, and a number of them submitted their ideas to Kubrick of what kind of products might be seen in a movie set in the year 2001. Much was made by MGM's publicity department of the film's realism, claiming in a 1968 brochure that "Everything in "2001: A Space Odyssey" can happen within the next three decades, and...most of the picture will happen by the beginning of the next millennium." Although the predictions central
Technologies in 2001: A Space Odyssey adviser for the film. "2001" accurately presents outer space as not allowing the propagation of sound, in sharp contrast to other films with space scenes in which explosions or sounds of passing spacecraft are heard. "2001" portrayal of weightlessness in spaceships and outer space is also more realistic. Tracking shots inside the rotating wheel providing artificial gravity contrast with the weightlessness outside the wheel during the repair and Hal disconnection scenes. (Scenes of the astronauts in the "Discovery" pod bay, along with earlier scenes involving shuttle flight attendants, depict walking in zero-gravity with the help of velcro-equipped shoes labeled "Grip