... man has achieved space travel. Another similarity was that both Clarke and Kubrick implied that man were merely infants. The narrator in "The Sentinel" referred to the earth as "our cradle," (241) while in 2001, the main character eats his food through a straw much like an infant does baby food. In outer space, man has left his crib and now, because of gravity, has to re-learn how to walk. This is similar to when a toddler took its first steps. I believe that both Kubrick and Clarke wanted to state that humans were new to space and have much to learn. There are also many differences between the movie and the short story. One major difference was that "The Sentinel" was much more literal and fast paced compared to 2001: A Space Odyssey. In his review, Roger Ebert says, "he reduces each scene to its essence, and leaves ...

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