In 1950, he designed a test to determine whether or not a computer has the ability to think, later called the Turing Test. In this test, a human asks questions to two respondents. One is a computer and the other is a human, but the questioner doesn't know the identity of each. After asking questions and listening to their answers, the person asking the question must then guess what the computer is. The computer is considered to have the ability to think if the person asking the question correctly selects the computer half or less than half of the times. Because it is just as likely to be chosen as the human responder, this would mean that the computer would have the thinking capacity equivalent to that of the human responder and could be considered intelligent. Many have criticized this test, but the Turing Test remains a major milestone in the field of artificial intelligence. It is still used today as a subject of controversy and argument on the