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- Path: sparky!uunet!psinntp!dg-rtp!sheol!throopw
- From: throopw@sheol.UUCP (Wayne Throop)
- Newsgroups: comp.ai.philosophy
- Subject: Re: causal powers
- Message-ID: <725000657@sheol.UUCP>
- Date: 22 Dec 92 02:42:17 GMT
- References: <724658704@sheol.UUCP> <BzLBGu.J5J@iat.holonet.net>
- Lines: 47
-
- :: From: throopw@sheol.UUCP (Wayne Throop)
- :: Message-ID: <724658704@sheol.UUCP>
- :: ...the difference between simulation and emulation...
- :: ... is one of effect-domain.
-
- : From: ken@iat.holonet.net (Ken Easlon)
- : Message-ID: <BzLBGu.J5J@iat.holonet.net>
- : I'm not sure I agree with this entirely. The effect domain of a good
- : computer simulation (in the sense normally used) could be altered simply by
- : changing or extending the I/O peripherals.
-
- Soit'ny. A computer supplied with suitable prosthetic devices
- becomes a robot, and its effect domain changes. Just as a human
- supplied with a binocular microscope and micromanipulators becomes
- capable of microsurgery, because its effect domain changes.
-
- (Of course, the two examples are unakin in some important ways,
- but in the basic way having to do with "grounding", I think they
- are very much akin.)
-
- :: Of course, my point of view still leaves fuzzy areas, such as
- :: whether SHRDLU-like entities simulate or emulate.
- : If we stick to something like the traditional definition of simulate (to
- : imitate by taking on an appearance) and emulate (to strive to equal or
- : exceed), I think SHRDLU could be said to emulate a robot's computational
- : ability, while simulating sensory sources and motor effects.
-
- Well, I'm really thinking of "emulate" and "simulate" in very
- jargon-like ways, rather than in the dictonary meaning, but the end
- result isn't much different than what Ken outlines above. For example,
- I'd say that SHRDLU simulates playing with blocks, just as a
- microsurgeon might simulate microsurgery with oversized models, and if
- provided with adequate prosthesis, would be "statically grounded" in
- dealing with blocks, just as the microsurgeon would plausibly be
- "statically grounded".
-
-
- Of course, somewhere between eyeglasses, as we pass by implanted lenses,
- replaced retinas, and eventually end up with a complete replacement for
- the visual cortext, or even the whole brain, we've gone from a
- prosthetic device to an android brain. But IMHO, a SHRDLU-like
- AI-on-a-computer with experience in only a simulated world is nowhere
- near any real region of fuzziness, and if it were provided with
- prosthetics that allowed it to interact with our world, they would BE
- essentially prosthetics, not a central part of the entity.
- --
- Wayne Throop ...!mcnc!dg-rtp!sheol!throopw
-