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- Date: Tue, 18 Aug 1992 12:08:32 PDT
- Sender: "Control Systems Group Network (CSGnet)" <CSG-L@UIUCVMD.BITNET>
- From: Penni Sibun <sibun@PARC.XEROX.COM>
- Subject: interactionism
- X-To: CSG-L%UIUCVMD.BITNET@pucc.princeton.edu
- In-Reply-To: "William T. Powers"'s message of Mon,
- 17 Aug 1992 22:33:59 -0700
- <92Aug17.223730pdt.11689@alpha.xerox.com>
- Lines: 70
-
- (penni sibun 920818.1200)
-
- i'll reiterate two things up front:
-
- 1) i'm not defending cognitivism; interactionism isn't cognitivism
- (or behaviorism!).
-
- 2) i'm quite willing to believe that as far as a technology for
- building things goes, pct might be the best candidate; i do like the
- feel of the model in a lot of respects.
-
- [From Bill Powers (920817.2100)]
-
- My question is this: would you explain, in terms of cog. sci,
- interactionism, or any other approach HOW a driver keeps the "left wheels
- near, or quite possibly over, the center line (if it is visible)"? By this,
- I mean just explain how the intention that this result should happen gets
- turned into the actual happening.
-
- no i can't explain how; i couldn't build or design something to do it.
- i can say that i don't think it's necessarily the right question. in
- other words, if we could account for all the things that i've
- mentioned (customary ways of driving, road construction, etc.), then
- maybe we don't even need to posit an *intention* to keep on the road.
- maybe, given everything else, keeping on the road is just the easiest
- thing to do. (i'm not arguing that organisms always do the easiest
- thing.) that's what interactionist approaches try to get at: an
- organism doesn't have to posit its goals _de novo_ and figure out how
- the satisfy them. there's already a lot of stuff around that
- facilitate doing what needs to get done. as agre puts it, we ``lean
- on the world'': our roads and cars are culture are designed to make
- driving down the road a plausibly easy thing to do.
-
- [Avery Andrews 920818:1543]
-
- I guess I don't (yet) see the point of not drawing a line between the
- inside & outside of critters. [...]
- the food-patches, barriers, etc. on the outside. I take Beer's point not
- to be that there is no inside-outside distinction, but that the
- explanations for behavioral patterns (at the `molar' level, if I
- remember my psych. jargon corrrectly) are often to be find in neither
- place exclusively.
-
- i agree. the rhetorical point of saying that there aren't any
- ``real'' lines is to make us think when we draw them, and be open to
- the possibility that it might be sensible to draw them in a different
- place for a diff explanation or a diff model.
-
- [Martin Taylor 920818 11:50]
- (Penn[i] Sibun 920817)
-
- > there's just tons of literature on
- >perception that suggest that perc. is a *lot* of work; in fact it
- >involves action--perhaps to the degree that p. and a. are inseparable.
- >(``active vision'' is a current buzzphrase.)
-
- This was cast as a criticism of PCT, but in fact it seems to be a reasonable
- description of how PCT says perception works. An ECS that is trying to
- achieve a percept can go only by its error signal.
-
- maybe someone can explain this to me. when you say ``signal'' or
- ``variable'' or ``percept'', it has connotations to me of a unified
- thing, like a tone, or a light intensity. but when i look at the
- road, i am not perceiving something like a tone. if you can explain
- how all the stuff my eyes take in can be a single unified thing, maybe
- i won't find it so oversimplified.
-
- cheers.
-
- --penni
-