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SEARLE

SEARLE. THE CHINESE ROOM ARGUMENT: MAN BECOMES COMPUTER. John Searle (born 1932). Philosophy of language mind social reality free will. Necessary Concepts. i) Turing Test ii) Intentionality (p. 333 footnote, and following) iii) Syntax/semantics distinction (p. 339, near end)

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SEARLE

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  1. SEARLE THE CHINESE ROOM ARGUMENT: MAN BECOMES COMPUTER

  2. John Searle (born 1932) Philosophy of language mind social reality free will

  3. Necessary Concepts i) Turing Test ii) Intentionality (p. 333 footnote, and following) iii) Syntax/semantics distinction (p. 339, near end) iv) Computation, program: purely syntactical operations v) Strong AI (Artificial Intelligence) [implied by Functionalism]: “the appropriately programmed computer really is a mind” (330)

  4. The Chinese Room Argument A thought experiment (gedanken experiment): main premises rest upon our intuitions about the experiment. Conclusions: Main: Strong AI is false. Also: Turing Test is faulty. Functionalism is false.

  5. Premise 1 Assume there exists a program that understands Chinese, that is, passes the Turing Test for comprehension of Chinese: The program’s first inputs are a Script and a Story in Chinese. Then when questions in Chinese about the story are input, the output is answers in Chinese that indicate understanding of the story.

  6. Premise2 A man in a room performs all of the operations of the program following an English translation of the program from 1, above: He gives precisely the same output as the program for any given input. [He is slower, but that is supposed to be irrelevant.]

  7. Premise 3 The man does not understand Chinese. By following the program, he convinces people outside the room that someone in the room understands Chinese, but he does not.

  8. First Conclusion Since the man is the “appropriately programmed computer,” Strong AI is false. [Actually he is only the central processing unit, not the whole computer. The program, input and output devices, are separate.]

  9. Second Conclusion Functionalism is false, since functionalism implies Strong AI. by modus tollens: F  SAI ~ SAI So ~ F

  10. Searle’s Explanation i) The computer has no intentionality, because semantics cannot be reduced to syntax (338-9). ii) Intentionality is a causal power of brain matter [gray matter Chauvinism].

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