Turing test

:  a test to establish the existence of artificial intelligence in which questions from an interrogator are answered by an unseen person and computer with the understanding that if the interrogator is unable to correctly identify which responder is human the computer has demonstrated thinking ability comparable to a human's The Turing test pits an interrogator against another human and a computer. Able to communicate with each via keyboard and printer only, the interrogator tries to determine which is which. If he can, the computer is not considered intelligent. — Phil Lopiccola