Alan Turing proposed the imitation game, later called the Turing test, in a 1950 paper.
Turing introduced the idea in “Computing Machinery and Intelligence,” published in the philosophical journal Mind. Instead of asking whether a machine can literally think, he proposed a practical language-based test. A human judge would communicate by text with both a person and a machine without seeing them, then try to identify which participant was the machine.
The test is often oversimplified as a universal certification of intelligence. Turing’s original discussion was more specific: it examined whether a machine could produce conversational answers sufficiently like a human’s to confuse an evaluator. Modern chatbots can perform well in some conversations, but passing a particular test does not establish consciousness, understanding, or general intelligence. The phrase “Turing test” became much more widely used than the original phrase “imitation game.”