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
Interpretations of 2001: A Space Odyssey in the film calls attention to the purpose of the satellites. James John Griffith, in a footnote in his book "Adaptations As Imitations: Films from Novels", wrote "I would wonder, for instance, how several critics, commenting on the match-cut that links humanity's prehistory and future, can identify—without reference to Clarke's novel—the satellite as a nuclear weapon". Arthur C. Clarke, in the TV documentary "2001: The Making of a Myth", described the bone-to-satellite sequence in the film, saying "The bone goes up and turns into what is supposed to be an orbiting space bomb, a weapon in space. Well, that isn't