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Rather than trying to determine if a machine is thinking, Turing suggests we should ask if the machine can win a game, called the "[[Turing test#Imitation game|Imitation Game]]". The original Imitation game, that Turing described, is a simple party game involving three players. Player A is a man, player B is a woman and player C (who plays the role of the interrogator) can be of either sex. In the Imitation Game, player C is unable to see either player A or player B (and knows them only as X and Y), and can communicate with them only through written notes or any other form that does not give away any details about their gender. By asking questions of player A and player B, player C tries to determine which of the two is the man and which is the woman. Player A's role is to trick the interrogator into making the wrong decision, while player B attempts to assist the interrogator in making the right one.<ref>{{Citation |last1=Oppy |first1=Graham |title=The Turing Test |date=2021 |url=https://plato.stanford.edu/archives/win2021/entriesuring-test/ |encyclopedia=The Stanford Encyclopedia of Philosophy |editor-last=Zalta |editor-first=Edward N. |access-date=2023-08-06 |edition=Winter 2021 |publisher=Metaphysics Research Lab, Stanford University |last2=Dowe |first2=David }}{{Dead link|date=December 2023 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
Turing proposes a variation of this game that involves the computer:
{{Blockquote|text=We now ask the question, "What will happen when a machine takes the part of A in this game?" Will the interrogator decide wrongly as often when the game is played like this as he does when the game is played between a man and a woman? These questions replace our original, So the modified game becomes one that involves three participants in isolated rooms: a computer (which is being tested), a human, and a (human) judge. The human judge can converse with both the human and the computer by typing into a terminal. Both the computer and human try to convince the judge that they are the human. If the judge cannot consistently tell which is which, then the computer wins the game.<ref>This describes the simplest version of the test. For a more detailed discussion, see [[Turing test#Versions|Versions of the Turing test]].</ref>
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