Turing test, in artificial intelligence, a test proposed (1950) by the English mathematician Alan M. Turing to determine whether a computer can “think.”
There are extreme difficulties in devising any objective criterion for distinguishing “original” thought from sufficiently sophisticated “parroting”; indeed, any evidence for original thought can be denied on the grounds that it ultimately was programmed into the computer. Turing sidestepped the debate about exactly how to define thinking by means of a very practical, albeit subjective, test: if a computer acts, reacts, and interacts like a sentient being, then call it sentient. To avoid prejudicial rejection of evidence of machine intelligence, Turing suggested the “imitation game,” now known as the Turing test: a remote human interrogator, within a fixed time frame, must distinguish between a computer and a human subject based on their replies to various questions posed by the interrogator. By means of a series of such tests, a computer’s success at “thinking” can be measured by its probability of being misidentified as the human subject. In late 2022, the advent of ChatGPT reignited conversation about the likelihood that the components of the Turing test had been met.
