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 had seen a demonstration of computer synthesis on an IBM 704 at Bell Labs in 1961. The rendition is gradually slowed down to a progressively lower sample rate, which then creates a strikingly electronic, distorted, "basso profundo". Arthur C. Clarke wrote the novel. He developed it concurrently with the film version and published it in 1968, after the film's release. "The Lost Worlds of 2001" (1972) elaborates on Clarke and Kubrick's collaboration. The novel has numerous differences from the film. Most notably, the setting for the part three (of four) in the book is not Jupiter, as in the film,