information:classification, linguistic:translation
HAL's breakdown

The reasons for HAL's malfunction and subsequent malignant behaviour have elicited much discussion. He has been compared to Frankenstein's monster. In Clarke's novel, HAL malfunctions because it has been ordered to lie to the crew of Discovery and withhold confidential information from them, namely the confidentially programmed mission priority over expendable human life, despite being constructed for "the accurate processing of information without distortion or concealment". This would not be addressed on film until the 1984 follow-up, 2010: The Year We Make Contact. Film critic Roger Ebert wrote that HAL, as the supposedly perfect computer, is actually the most human of the characters. In an interview with Joseph Gelmis in 1969, Kubrick said that HAL "had an acute emotional crisis because he could not accept evidence of his own fallibility".