Technologies in 2001: A Space Odyssey well, such as a nervous breakdown—as Hal did in the film. Clarke noted that, contrary to popular rumor, it was a complete coincidence that each of the letters of Hal's name immediately preceded those of IBM in the alphabet. The meaning of HAL has been given both as "Heuristically programmed ALgorithmic computer" and as "Heuristic ALgorithmic computer". The former appears in Clarke's novel of "2001" and the latter in his sequel novel "2010". In computer science, a heuristic is a programmable procedure not necessarily based on fixed rules, producing informed guesses often using trial-and-error. The results can be false such
2001: A Space Odyssey (film) "culturally, historically, or aesthetically significant" by the United States Library of Congress and selected for preservation in the National Film Registry. "Sight & Sound" magazine ranked "2001: A Space Odyssey" sixth in the top ten films of all time in its 2002 and 2012 critics' polls editions; it also tied for second place in the magazine's 2012 directors' poll. In 2010, it was named the greatest film of all time by "The Moving Arts Film Journal". In an African desert millions of years ago, a tribe of hominids is driven away from its water hole by a rival tribe. They