Now it can be told: HAL, the psychotic supercomputer in the sci-fi classic 2001, failed the Turing Test. Not Alan Turing's classic blindfold test for artificial intelligence, which the ultra-intelligent machine could pass "with ease" as Arthur C. Clarke notes in the novel on which Stanley Kubrick based his movie, but the test that Turing himself failed (albeit deliberately): that of passing for straight.

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