Turing test (imitation game)

Alan Turing’s proposed behavioral criterion: can dialogue from a machine be distinguished from a human’s?

In his 1950 paper Computing Machinery and Intelligence, Alan Turing suggested the imitation game: a human judge interacts by text with an unknown counterpart; if they cannot reliably tell machine from human, the machine passes: for that narrow setting.

The test does not define intelligence universally; critics note it can reward persuasion over truthfulness: as with some LLMs tuned for plausible chat.