Source
Searle (1980), Minds, brains, and programs, LIT-400, read in full in NOTE-349. Only the target article (BBS 3:417–424) was read, not the commentaries or Searle’s response.
What was actually shown
The room. A man who knows no Chinese follows rules for manipulating Chinese symbols and so returns answers to questions about Chinese stories. He is “simply an instantiation of the computer program”. “It seems to me quite obvious in the example that I do not understand a word of the Chinese stories.” So the program is not sufficient for understanding, and “not the slightest reason has been given to suppose” it is necessary or contributory; Searle concedes “I have not demonstrated that this claim is false”.
The replies. Systems: let the man internalise rules and data; “there isn’t anything in the system that isn’t in him”, and a Chinese subsystem would be “simply a part of the English subsystem”. Robot: adding causal links to the world concedes that formal manipulation is not enough, and the man inside still understands nothing. Brain simulator: water pipes simulating synapses do not understand. Combination: we would rationally ascribe intentionality to a humanlike robot “as long as we knew nothing more about it”, and withdraw it on learning it runs a formal program. Other minds: the question is what is attributed, not how it is known. Many mansions: redefines AI and concedes the thesis.
The positive view. Intentionality is a product of causal features of the brain, “an empirical fact”. “We are precisely such machines”; an artifact with a nervous system “sufficiently like ours” could think; but nothing thinks “solely in virtue of being a computer with the right sort of program”. Simulation is not duplication: simulated fires do not burn.
What could have come out otherwise. Nothing empirical. The argument turns on a thought experiment whose verdict is the man’s report about himself.
What this does not say
- That the systems reply is refuted. The internalisation answer assumes that whatever the man runs in his head is a part of him whose understanding he could report. That is what the reply denies (NOTE-349, C3 and Limitations).
- That machines cannot think. Searle grants that they can, and that we are such machines. The claim is that no program suffices.
- That a given system lacks understanding. The conclusion is about sufficiency. Citing the room for “current models do not understand” outruns it (NOTE-349, on NOTE-176).
- Anything about consciousness. “Consciousness, intentionality, and all the rest of it” is mentioned; the argument concerns intentionality and understanding.
- Which causal powers matter. Left “an empirical question”, with no test offered.
- That scale and speed are irrelevant. The man’s slowness and the size of the task are idealised away without argument.
Connections
- Rival: the intentional strategy (THEORY-538). Dennett makes a system a believer if the strategy predicts it reliably and voluminously, whatever runs it. Searle’s combination reply says the ascription is withdrawn once the program is known. Both cannot be right about the same robot.
- Turing (THEORY-433). Searle gives the other-minds reply “only a short reply”, and calls the test “unashamedly behavioristic and operationalistic”. Turing’s paper does not claim understanding for a passing machine.
- Implementation (THEORY-609). Chalmers answers the room by finding two computational structures, and so two minds, in it: the man’s brain and the marks on paper. That answer presupposes computational sufficiency, which the implementation result itself does not establish.
- Composition (THEORY-043). Searle refuses both the downward move to a mind of mindless parts and the upward move to a mind of minded parts, by causal powers rather than by anti-nesting or architecture; THEORY-043 names the position as outside its dispute.
- Psychologism (THEORY-092). Block reaches a related verdict, that behaviour does not fix the mental, by a different route: how the responses are produced, not what they are made of.
- Biological naturalism. Seth (LIT-135) separates his view from Searle’s later formulation; this paper is the earlier, causal-powers version, and it leaves open whether another chemistry would do.