home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!psinntp!dg-rtp!sheol!throopw
- From: throopw@sheol.UUCP (Wayne Throop)
- Newsgroups: comp.ai.philosophy
- Subject: Re: causal powers
- Message-ID: <725001335@sheol.UUCP>
- Date: 22 Dec 92 02:42:21 GMT
- References: <1992Dec15.230612.8188@Csli.Stanford.EDU>
- Lines: 44
-
- :: From: throopw@sheol.uucp (Wayne Throop)
- :: Message-ID: <724315603@sheol.UUCP>
- :: it seems to me that a good way of looking at
- :: what a program IS, is as a formal description of the causal powers
- :: of a given process running on a computer.
-
- : From: avrom@Csli.Stanford.EDU (Avrom Faderman)
- : Message-ID: <1992Dec15.230612.8188@Csli.Stanford.EDU>
- : A program CAN BE used as a description of causal powers, but it isn't
- : necessarily. For example, a program can be used to drive a robot; this
- : robot can pick things up, put them down, and throw them around. IF the
- : program is embedded in a robot, it describes these causal powers.
-
- I agree. In fact, I posted a while back that I agreed with searle that
- a program, or even a process instantiating that program, need not have
- the "causal powers" of an intelligent entity. It's just that I think
- that Searle's own thought experiment, the Chinese Room, is an example of
- a process that DOES have the required causal powers, are programs
- instantiated as processes on typical computers.
-
- ( In fairness, it's pretty clear to me that Searle means something
- else by "causal powers" than what I'm calling "effect domain"
- elsewhere in this thread, but honestly, I haven't been able to even
- begin to see where he explains what he DOES mean by the term. )
-
- :: Of course, it may be that some "causal powers" that "meat" brains
- :: have are not computable. But that's more Penrose's argument than
- :: Searle's.
- : Searle would answer that he doesn't claim simply that the causal powers
- : of meat brains are not computable--rather he says that NO causal powers
- : of ANY object are computable: Computation is a formal process--the
- : same computation can be used to describe any of many causal powers
-
- I think this is a usage of "not computable" other than that I intended.
- I meant it in the formal sense, that is, as it applies to formal
- systems, not to concrete processes.
-
- That said, I agree that a formal description of a process with relevant
- "causal powers" may also be a formal description of some other process
- *without* relevant "causal powers". But again, I think the processes
- Searle chooses to make a concrete example are faulty, and that the CR
- and computers *do* have the "right" causal powers.
- --
- Wayne Throop ...!mcnc!dg-rtp!sheol!throopw
-