In 1950, British computer scientist Alan Turing proposed an experimental method for answering the question: can machines think? He suggested if a human couldn’t tell whether they were speaking to an artificially intelligent (AI) machine or another human after five minutes of questioning, this would demonstrate AI has human-like intelligence.
Although AI systems remained far from passing Turing’s test during his lifetime, he speculated that
““[…] in about fifty years’ time it will be possible to programme computers […] to make them play the imitation game so well that an average interrogator will not have more than 70% chance of making the right identification after five minutes of questioning.”Alan Turing
