Is "the singularity" coming? A year of breakthroughs in artificial intelligence has left experts wondering whether machines will soon be smarter than us and out of human control.
Rise of the robots: 2023 in AI
Making a mastermind: Artificial general intelligence could happen as soon as 2050. Glossary
Disruptive - Causing radical change in an existing industry or market.
Bletchley Park - The top-secret base of English codebreakers during World War Two.
Pentagon - The headquarters of the US Defence Department, so-called because it has five sides. In 1967, peace protestors attempted unsuccessfully to levitate it (making it rise into the air) until all evil emissions had fled, in the hope of ending the Vietnam War.
Extinction - Completely dying out.