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Second, creating lifelike simulations of human beings is a difficult problem on its own that does not need to be solved to achieve the basic goals of AI research. Believable human characters may be interesting in a work of art, a [[video game|game]], or a sophisticated [[user interface]], but they are not part of the science of creating intelligent machines, that is, machines that solve problems using intelligence.
Turing wanted to provide a clear and understandable example to aid in the discussion of the [[philosophy of artificial intelligence]].<ref>{{Harvnb|Turing|1950}}, under the heading "The Imitation Game," where he writes, "Instead of attempting such a definition I shall replace the question by another, which is closely related to it and is expressed in relatively unambiguous words."</ref> [[John McCarthy (computer scientist)|John McCarthy]] observes that the philosophy of AI is "unlikely to have any more effect on the practice of AI research than philosophy of science generally has on the practice of science."<ref>{{Citation
| last=McCarthy | first=John | author-link=John McCarthy (computer scientist)
| title=The Philosophy of Artificial Intelligence
| work=What has AI in Common with Philosophy?
| year=1996
| url=http://www-formal.stanford.edu/jmc/aiphil/node2.html#SECTION00020000000000000000
}}</ref>
==Variations of the Turing test==
|